30131942 has 8 divisors (see below), whose sum is σ = 45311832. Its totient is φ = 15028000.

The previous prime is 30131921. The next prime is 30131951. The reversal of 30131942 is 24913103.

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

It is a congruent number.

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, 17984 + ... + 19587.

It is an arithmetic number, because the mean of its divisors is an integer number (5663979).

Almost surely, 2^30131942 is an apocalyptic number.

30131942 is a deficient number, since it is larger than the sum of its proper divisors (15179890).

30131942 is a wasteful number, since it uses less digits than its factorization.

30131942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37974.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 30131942 is about 5489.2569624677. The cubic root of 30131942 is about 311.1781115997.

The spelling of 30131942 in words is "thirty million, one hundred thirty-one thousand, nine hundred forty-two".