31102132 has 6 divisors (see below), whose sum is σ = 54428738. Its totient is φ = 15551064.

The previous prime is 31102121. The next prime is 31102133. The reversal of 31102132 is 23120113.

It can be written as a sum of positive squares in only one way, i.e., 26666896 + 4435236 = 5164^2 + 2106^2 .

It is a super-2 number, since 2×31102132² = 1934685229890848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102133) by changing a digit.

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, 3887763 + ... + 3887770.

Almost surely, 2^31102132 is an apocalyptic number.

It is an amenable number.

31102132 is a deficient number, since it is larger than the sum of its proper divisors (23326606).

31102132 is a wasteful number, since it uses less digits than its factorization.

31102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775537 (or 7775535 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 31102132 is about 5576.9285453554. The cubic root of 31102132 is about 314.4826714680.

Adding to 31102132 its reverse (23120113), we get a palindrome (54222245).

The spelling of 31102132 in words is "thirty-one million, one hundred two thousand, one hundred thirty-two".