31404732911 has 4 divisors (see below), whose sum is σ = 31521479400. Its totient is φ = 31287986424.

The previous prime is 31404732889. The next prime is 31404732917. The reversal of 31404732911 is 11923740413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31404732911 - 2¹⁸ = 31404470767 is a prime.

It is a super-2 number, since 2×31404732911² (a number of 22 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 (31404732917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58372841 + ... + 58373378.

It is an arithmetic number, because the mean of its divisors is an integer number (7880369850).

Almost surely, 2^31404732911 is an apocalyptic number.

31404732911 is a deficient number, since it is larger than the sum of its proper divisors (116746489).

31404732911 is a wasteful number, since it uses less digits than its factorization.

31404732911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116746488.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 31404732911 in words is "thirty-one billion, four hundred four million, seven hundred thirty-two thousand, nine hundred eleven".