31371045 has 16 divisors (see below), whose sum is σ = 50317632. Its totient is φ = 16689920.

The previous prime is 31371031. The next prime is 31371047. The reversal of 31371045 is 54017313.

It is not a de Polignac number, because 31371045 - 2⁴ = 31371029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31371047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4285 + ... + 9005.

It is an arithmetic number, because the mean of its divisors is an integer number (3144852).

Almost surely, 2^31371045 is an apocalyptic number.

It is an amenable number.

31371045 is a deficient number, since it is larger than the sum of its proper divisors (18946587).

31371045 is a wasteful number, since it uses less digits than its factorization.

31371045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 31371045 is about 5600.9860738981. The cubic root of 31371045 is about 315.3864242258.

Adding to 31371045 its reverse (54017313), we get a palindrome (85388358).

The spelling of 31371045 in words is "thirty-one million, three hundred seventy-one thousand, forty-five".