31970023 has 8 divisors (see below), whose sum is σ = 33763968. Its totient is φ = 30209784.

The previous prime is 31970009. The next prime is 31970041. The reversal of 31970023 is 32007913.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31970023 - 2⁵ = 31969991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31970023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31970063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6465 + ... + 10282.

It is an arithmetic number, because the mean of its divisors is an integer number (4220496).

Almost surely, 2^31970023 is an apocalyptic number.

31970023 is a deficient number, since it is larger than the sum of its proper divisors (1793945).

31970023 is a wasteful number, since it uses less digits than its factorization.

31970023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16853.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 31970023 is about 5654.2040111761. The cubic root of 31970023 is about 317.3810429183.

Adding to 31970023 its reverse (32007913), we get a palindrome (63977936).

The spelling of 31970023 in words is "thirty-one million, nine hundred seventy thousand, twenty-three".