31152242 has 8 divisors (see below), whose sum is σ = 50976432. Its totient is φ = 14160100.

The previous prime is 31152227. The next prime is 31152257. The reversal of 31152242 is 24225113.

It is an interprime number because it is at equal distance from previous prime (31152227) and next prime (31152257).

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707984 + ... + 708027.

It is an arithmetic number, because the mean of its divisors is an integer number (6372054).

Almost surely, 2^31152242 is an apocalyptic number.

31152242 is a deficient number, since it is larger than the sum of its proper divisors (19824190).

31152242 is a wasteful number, since it uses less digits than its factorization.

31152242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416024.

The product of its digits is 480, while the sum is 20.

The square root of 31152242 is about 5581.4193535337. The cubic root of 31152242 is about 314.6514730906.

Adding to 31152242 its reverse (24225113), we get a palindrome (55377355).

The spelling of 31152242 in words is "thirty-one million, one hundred fifty-two thousand, two hundred forty-two".