31192442 has 8 divisors (see below), whose sum is σ = 46826100. Its totient is φ = 15583744.

The previous prime is 31192423. The next prime is 31192457. The reversal of 31192442 is 24429113.

It can be written as a sum of positive squares in 2 ways, for example, as 22005481 + 9186961 = 4691^2 + 3031^2 .

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

It is a nialpdrome in base 12.

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, 2717 + ... + 8352.

Almost surely, 2^31192442 is an apocalyptic number.

31192442 is a deficient number, since it is larger than the sum of its proper divisors (15633658).

31192442 is a wasteful number, since it uses less digits than its factorization.

31192442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12480.

The product of its digits is 1728, while the sum is 26.

The square root of 31192442 is about 5585.0194270029. The cubic root of 31192442 is about 314.7867608622.

The spelling of 31192442 in words is "thirty-one million, one hundred ninety-two thousand, four hundred forty-two".