31972463 has 4 divisors (see below), whose sum is σ = 31983888. Its totient is φ = 31961040.

The previous prime is 31972433. The next prime is 31972469. The reversal of 31972463 is 36427913.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31972463 - 2⁶ = 31972399 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 (31972469) 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, 1643 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (7995972).

Almost surely, 2^31972463 is an apocalyptic number.

31972463 is a deficient number, since it is larger than the sum of its proper divisors (11425).

31972463 is an equidigital number, since it uses as much as digits as its factorization.

31972463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11424.

The product of its digits is 27216, while the sum is 35.

The square root of 31972463 is about 5654.4197757153. The cubic root of 31972463 is about 317.3891170450.

The spelling of 31972463 in words is "thirty-one million, nine hundred seventy-two thousand, four hundred sixty-three".