31416320406 has 64 divisors (see below), whose sum is σ = 65168257536. Its totient is φ = 10091692800.

The previous prime is 31416320387. The next prime is 31416320437. The reversal of 31416320406 is 60402361413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4232010 + ... + 4239426.

It is an arithmetic number, because the mean of its divisors is an integer number (1018254024).

Almost surely, 2^31416320406 is an apocalyptic number.

31416320406 is an abundant number, since it is smaller than the sum of its proper divisors (33751937130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31416320406 is a wasteful number, since it uses less digits than its factorization.

31416320406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 31416320406 its reverse (60402361413), we get a palindrome (91818681819).

The spelling of 31416320406 in words is "thirty-one billion, four hundred sixteen million, three hundred twenty thousand, four hundred six".