31248897 has 8 divisors (see below), whose sum is σ = 42348480. Its totient is φ = 20490960.

The previous prime is 31248859. The next prime is 31248947. The reversal of 31248897 is 79884213.

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

It is not a de Polignac number, because 31248897 - 2⁷ = 31248769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31248857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85197 + ... + 85562.

It is an arithmetic number, because the mean of its divisors is an integer number (5293560).

Almost surely, 2^31248897 is an apocalyptic number.

It is an amenable number.

31248897 is a deficient number, since it is larger than the sum of its proper divisors (11099583).

31248897 is a wasteful number, since it uses less digits than its factorization.

31248897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170823.

The product of its digits is 96768, while the sum is 42.

The square root of 31248897 is about 5590.0712875598. The cubic root of 31248897 is about 314.9765565823.

It can be divided in two parts, 3124 and 8897, that added together give a palindrome (12021).

The spelling of 31248897 in words is "thirty-one million, two hundred forty-eight thousand, eight hundred ninety-seven".