311241400431 has 32 divisors (see below), whose sum is σ = 448572476352. Its totient is φ = 190822072320.

The previous prime is 311241400411. The next prime is 311241400433. The reversal of 311241400431 is 134004142113.

It is not a de Polignac number, because 311241400431 - 2¹³ = 311241392239 is a prime.

It is a super-2 number, since 2×311241400431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311241400433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14725551 + ... + 14746671.

It is an arithmetic number, because the mean of its divisors is an integer number (14017889886).

Almost surely, 2^311241400431 is an apocalyptic number.

311241400431 is a deficient number, since it is larger than the sum of its proper divisors (137331075921).

311241400431 is a wasteful number, since it uses less digits than its factorization.

311241400431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 311241400431 its reverse (134004142113), we get a palindrome (445245542544).

The spelling of 311241400431 in words is "three hundred eleven billion, two hundred forty-one million, four hundred thousand, four hundred thirty-one".