11202312431 has 16 divisors (see below), whose sum is σ = 11742174720. Its totient is φ = 10678704960.

The previous prime is 11202312413. The next prime is 11202312439. The reversal of 11202312431 is 13421320211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202312431 is a prime.

It is a super-2 number, since 2×11202312431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202312439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260276 + ... + 300246.

It is an arithmetic number, because the mean of its divisors is an integer number (733885920).

Almost surely, 2^11202312431 is an apocalyptic number.

11202312431 is a deficient number, since it is larger than the sum of its proper divisors (539862289).

11202312431 is an equidigital number, since it uses as much as digits as its factorization.

11202312431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40174.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11202312431 its reverse (13421320211), we get a palindrome (24623632642).

The spelling of 11202312431 in words is "eleven billion, two hundred two million, three hundred twelve thousand, four hundred thirty-one".