31906452983 has 4 divisors (see below), whose sum is σ = 32188811088. Its totient is φ = 31624094880.

The previous prime is 31906452973. The next prime is 31906453013. The reversal of 31906452983 is 38925460913.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38925460913 = 131 ⋅297140923.

It is a cyclic number.

It is not a de Polignac number, because 31906452983 - 2⁴ = 31906452967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31906452973) 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, 141178883 + ... + 141179108.

It is an arithmetic number, because the mean of its divisors is an integer number (8047202772).

Almost surely, 2^31906452983 is an apocalyptic number.

31906452983 is a deficient number, since it is larger than the sum of its proper divisors (282358105).

31906452983 is a wasteful number, since it uses less digits than its factorization.

31906452983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282358104.

The product of its (nonzero) digits is 1399680, while the sum is 50.

The spelling of 31906452983 in words is "thirty-one billion, nine hundred six million, four hundred fifty-two thousand, nine hundred eighty-three".