31053172 has 6 divisors (see below), whose sum is σ = 54343058. Its totient is φ = 15526584.

The previous prime is 31053137. The next prime is 31053173. The reversal of 31053172 is 27135013.

It can be written as a sum of positive squares in only one way, i.e., 29550096 + 1503076 = 5436^2 + 1226^2 .

It is a super-3 number, since 3×31053172³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31053173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3881643 + ... + 3881650.

Almost surely, 2^31053172 is an apocalyptic number.

It is an amenable number.

31053172 is a deficient number, since it is larger than the sum of its proper divisors (23289886).

31053172 is a wasteful number, since it uses less digits than its factorization.

31053172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7763297 (or 7763295 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 31053172 is about 5572.5373035988. The cubic root of 31053172 is about 314.3175685541.

Adding to 31053172 its reverse (27135013), we get a palindrome (58188185).

The spelling of 31053172 in words is "thirty-one million, fifty-three thousand, one hundred seventy-two".