30831442 has 8 divisors (see below), whose sum is σ = 46271232. Its totient is φ = 15407700.

The previous prime is 30831419. The next prime is 30831443. The reversal of 30831442 is 24413803.

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

It is not an unprimeable number, because it can be changed into a prime (30831443) 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, 3967 + ... + 8797.

It is an arithmetic number, because the mean of its divisors is an integer number (5783904).

Almost surely, 2^30831442 is an apocalyptic number.

30831442 is a deficient number, since it is larger than the sum of its proper divisors (15439790).

30831442 is a wasteful number, since it uses less digits than its factorization.

30831442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8024.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 30831442 is about 5552.6067752003. The cubic root of 30831442 is about 313.5676701300.

The spelling of 30831442 in words is "thirty million, eight hundred thirty-one thousand, four hundred forty-two".