31148842 has 16 divisors (see below), whose sum is σ = 49251240. Its totient is φ = 14752192.

The previous prime is 31148837. The next prime is 31148861. The reversal of 31148842 is 24884113.

It can be written as a sum of positive squares in 4 ways, for example, as 30813601 + 335241 = 5551^2 + 579^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1993 + ... + 8140.

Almost surely, 2^31148842 is an apocalyptic number.

31148842 is a deficient number, since it is larger than the sum of its proper divisors (18102398).

31148842 is a wasteful number, since it uses less digits than its factorization.

31148842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217.

The product of its digits is 6144, while the sum is 31.

The square root of 31148842 is about 5581.1147631992. The cubic root of 31148842 is about 314.6400255043.

The spelling of 31148842 in words is "thirty-one million, one hundred forty-eight thousand, eight hundred forty-two".