31242632 has 8 divisors (see below), whose sum is σ = 58579950. Its totient is φ = 15621312.

The previous prime is 31242623. The next prime is 31242641. The reversal of 31242632 is 23624213.

It is an interprime number because it is at equal distance from previous prime (31242623) and next prime (31242641).

It can be written as a sum of positive squares in only one way, i.e., 27730756 + 3511876 = 5266^2 + 1874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×31242632² = 1952204108574848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31242598 and 31242607.

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, 1952657 + ... + 1952672.

Almost surely, 2^31242632 is an apocalyptic number.

It is an amenable number.

31242632 is a deficient number, since it is larger than the sum of its proper divisors (27337318).

31242632 is a wasteful number, since it uses less digits than its factorization.

31242632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3905335 (or 3905331 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 31242632 is about 5589.5108909456. The cubic root of 31242632 is about 314.9555055991.

Adding to 31242632 its reverse (23624213), we get a palindrome (54866845).

The spelling of 31242632 in words is "thirty-one million, two hundred forty-two thousand, six hundred thirty-two".