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11231432031 = 36775530001
BaseRepresentation
bin10100111010111001…
…00000110101011111
31001222201220212022010
422131130200311133
5141000221311111
65054252322303
7545216411541
oct123534406537
931881825263
1011231432031
11484393a136
122215473393
13109cb68691
14787915691
1545b056aa6
hex29d720d5f

11231432031 has 8 divisors (see below), whose sum is σ = 14997365424. Its totient is φ = 7476560000.

The previous prime is 11231432027. The next prime is 11231432053. The reversal of 11231432031 is 13023413211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11231432031 - 22 = 11231432027 is a prime.

It is a super-2 number, since 2×112314320312 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11231431989 and 11231432007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231432131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2762970 + ... + 2767031.

It is an arithmetic number, because the mean of its divisors is an integer number (1874670678).

Almost surely, 211231432031 is an apocalyptic number.

11231432031 is a deficient number, since it is larger than the sum of its proper divisors (3765933393).

11231432031 is an equidigital number, since it uses as much as digits as its factorization.

11231432031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530681.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11231432031 its reverse (13023413211), we get a palindrome (24254845242).

The spelling of 11231432031 in words is "eleven billion, two hundred thirty-one million, four hundred thirty-two thousand, thirty-one".

Divisors: 1 3 677 2031 5530001 16590003 3743810677 11231432031