31057463 has 4 divisors (see below), whose sum is σ = 32128440. Its totient is φ = 29986488.

The previous prime is 31057447. The next prime is 31057471. The reversal of 31057463 is 36475013.

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 31057463 - 2⁴ = 31057447 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1070947 = 31057463 / (3 + 1 + 0 + 5 + 7 + 4 + 6 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31057483) 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, 535445 + ... + 535502.

It is an arithmetic number, because the mean of its divisors is an integer number (8032110).

Almost surely, 2^31057463 is an apocalyptic number.

31057463 is a deficient number, since it is larger than the sum of its proper divisors (1070977).

31057463 is a wasteful number, since it uses less digits than its factorization.

31057463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070976.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 31057463 is about 5572.9223034239. The cubic root of 31057463 is about 314.3320455997.

The spelling of 31057463 in words is "thirty-one million, fifty-seven thousand, four hundred sixty-three".