31403534011 has 4 divisors (see below), whose sum is σ = 31404618000. Its totient is φ = 31402450024.

The previous prime is 31403534003. The next prime is 31403534017. The reversal of 31403534011 is 11043530413.

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 31403534011 - 2³ = 31403534003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31403534017) 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, 497311 + ... + 556888.

It is an arithmetic number, because the mean of its divisors is an integer number (7851154500).

Almost surely, 2^31403534011 is an apocalyptic number.

31403534011 is a deficient number, since it is larger than the sum of its proper divisors (1083989).

31403534011 is a wasteful number, since it uses less digits than its factorization.

31403534011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1083988.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 31403534011 in words is "thirty-one billion, four hundred three million, five hundred thirty-four thousand, eleven".