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1051230031 = 9710837423
BaseRepresentation
bin111110101010000…
…111111101001111
32201021002000111121
4332222013331033
54123103330111
6252151301411
735023210405
oct7652077517
92637060447
101051230031
1149a434755
1225407a867
13139a36407
149d885475
1562450871
hex3ea87f4f

1051230031 has 4 divisors (see below), whose sum is σ = 1062067552. Its totient is φ = 1040392512.

The previous prime is 1051230017. The next prime is 1051230079. The reversal of 1051230031 is 1300321501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300321501 = 9161141941.

It is not a de Polignac number, because 1051230031 - 213 = 1051221839 is a prime.

It is a super-2 number, since 2×10512300312 = 2210169156152521922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051229987 and 1051230014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051230731) 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, 5418615 + ... + 5418808.

It is an arithmetic number, because the mean of its divisors is an integer number (265516888).

Almost surely, 21051230031 is an apocalyptic number.

1051230031 is a deficient number, since it is larger than the sum of its proper divisors (10837521).

1051230031 is an equidigital number, since it uses as much as digits as its factorization.

1051230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10837520.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 1051230031 is about 32422.6777271711. The cubic root of 1051230031 is about 1016.7930905162.

Adding to 1051230031 its reverse (1300321501), we get a palindrome (2351551532).

The spelling of 1051230031 in words is "one billion, fifty-one million, two hundred thirty thousand, thirty-one".

Divisors: 1 97 10837423 1051230031