31475042 has 4 divisors (see below), whose sum is σ = 47212566. Its totient is φ = 15737520.

The previous prime is 31475029. The next prime is 31475053. The reversal of 31475042 is 24057413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 31460881 + 14161 = 5609^2 + 119^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7868759 + ... + 7868762.

Almost surely, 2^31475042 is an apocalyptic number.

31475042 is a deficient number, since it is larger than the sum of its proper divisors (15737524).

31475042 is a wasteful number, since it uses less digits than its factorization.

31475042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15737523.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 31475042 is about 5610.2622042111. The cubic root of 31475042 is about 315.7345484776.

The spelling of 31475042 in words is "thirty-one million, four hundred seventy-five thousand, forty-two".