31542212 has 12 divisors (see below), whose sum is σ = 59445036. Its totient is φ = 14557920.

The previous prime is 31542197. The next prime is 31542229. The reversal of 31542212 is 21224513.

It can be written as a sum of positive squares in 2 ways, for example, as 1577536 + 29964676 = 1256^2 + 5474^2 .

It is a super-2 number, since 2×31542212² = 1989822275705888, which contains 22 as substring.

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, 303239 + ... + 303342.

It is an arithmetic number, because the mean of its divisors is an integer number (4953753).

Almost surely, 2^31542212 is an apocalyptic number.

It is an amenable number.

31542212 is a deficient number, since it is larger than the sum of its proper divisors (27902824).

31542212 is a wasteful number, since it uses less digits than its factorization.

31542212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606598 (or 606596 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 31542212 is about 5616.2453650103. The cubic root of 31542212 is about 315.9589889628.

Adding to 31542212 its reverse (21224513), we get a palindrome (52766725).

The spelling of 31542212 in words is "thirty-one million, five hundred forty-two thousand, two hundred twelve".