311431401003 has 16 divisors (see below), whose sum is σ = 424924222976. Its totient is φ = 202780337760.

The previous prime is 311431400999. The next prime is 311431401023. The reversal of 311431401003 is 300104134113.

It is not a de Polignac number, because 311431401003 - 2² = 311431400999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311431401023) 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, 2406126 + ... + 2532252.

It is an arithmetic number, because the mean of its divisors is an integer number (26557763936).

Almost surely, 2^311431401003 is an apocalyptic number.

311431401003 is a deficient number, since it is larger than the sum of its proper divisors (113492821973).

311431401003 is a wasteful number, since it uses less digits than its factorization.

311431401003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145314.

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

Adding to 311431401003 its reverse (300104134113), we get a palindrome (611535535116).

The spelling of 311431401003 in words is "three hundred eleven billion, four hundred thirty-one million, four hundred one thousand, three".