31401421311 has 16 divisors (see below), whose sum is σ = 45100016640. Its totient is φ = 19319324640.

The previous prime is 31401421307. The next prime is 31401421333. The reversal of 31401421311 is 11312410413.

It is not a de Polignac number, because 31401421311 - 2² = 31401421307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31401421211) 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, 72310 + ... + 260828.

It is an arithmetic number, because the mean of its divisors is an integer number (2818751040).

Almost surely, 2^31401421311 is an apocalyptic number.

31401421311 is a deficient number, since it is larger than the sum of its proper divisors (13698595329).

31401421311 is a wasteful number, since it uses less digits than its factorization.

31401421311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192806.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31401421311 its reverse (11312410413), we get a palindrome (42713831724).

The spelling of 31401421311 in words is "thirty-one billion, four hundred one million, four hundred twenty-one thousand, three hundred eleven".