113313021431 has 2 divisors, whose sum is σ = 113313021432. Its totient is φ = 113313021430.

The previous prime is 113313021379. The next prime is 113313021439. The reversal of 113313021431 is 134120313311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 113313021431 - 2²² = 113308827127 is a prime.

It is a super-2 number, since 2×113313021431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 113313021397 and 113313021406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113313021439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56656510715 + 56656510716.

It is an arithmetic number, because the mean of its divisors is an integer number (56656510716).

Almost surely, 2^113313021431 is an apocalyptic number.

113313021431 is a deficient number, since it is larger than the sum of its proper divisors (1).

113313021431 is an equidigital number, since it uses as much as digits as its factorization.

113313021431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 113313021431 its reverse (134120313311), we get a palindrome (247433334742).

The spelling of 113313021431 in words is "one hundred thirteen billion, three hundred thirteen million, twenty-one thousand, four hundred thirty-one".