31213354 has 4 divisors (see below), whose sum is σ = 46820034. Its totient is φ = 15606676.

The previous prime is 31213321. The next prime is 31213363. The reversal of 31213354 is 45331213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45331213 = 179 ⋅253247.

It can be written as a sum of positive squares in only one way, i.e., 18447025 + 12766329 = 4295^2 + 3573^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7803337 + ... + 7803340.

Almost surely, 2^31213354 is an apocalyptic number.

31213354 is a deficient number, since it is larger than the sum of its proper divisors (15606680).

31213354 is a wasteful number, since it uses less digits than its factorization.

31213354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15606679.

The product of its digits is 1080, while the sum is 22.

The square root of 31213354 is about 5586.8912643795. The cubic root of 31213354 is about 314.8570914700.

Adding to 31213354 its reverse (45331213), we get a palindrome (76544567).

The spelling of 31213354 in words is "thirty-one million, two hundred thirteen thousand, three hundred fifty-four".