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1430311013 = 1975279527
BaseRepresentation
bin101010101000000…
…1101000001100101
310200200101022211222
41111100031001211
510412124423023
6353532310125
750305304645
oct12520150145
93620338758
101430311013
1167441191a
1233b012345
1319a4321a1
14d7d62525
1585880cc8
hex5540d065

1430311013 has 4 divisors (see below), whose sum is σ = 1505590560. Its totient is φ = 1355031468.

The previous prime is 1430311009. The next prime is 1430311027. The reversal of 1430311013 is 3101130341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3101130341 = 29106935529.

It is a cyclic number.

It is not a de Polignac number, because 1430311013 - 22 = 1430311009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1430310982 and 1430311000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430311093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37639745 + ... + 37639782.

It is an arithmetic number, because the mean of its divisors is an integer number (376397640).

Almost surely, 21430311013 is an apocalyptic number.

It is an amenable number.

1430311013 is a deficient number, since it is larger than the sum of its proper divisors (75279547).

1430311013 is an equidigital number, since it uses as much as digits as its factorization.

1430311013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75279546.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1430311013 is about 37819.4528384534. The cubic root of 1430311013 is about 1126.7048424425.

Adding to 1430311013 its reverse (3101130341), we get a palindrome (4531441354).

The spelling of 1430311013 in words is "one billion, four hundred thirty million, three hundred eleven thousand, thirteen".

Divisors: 1 19 75279527 1430311013