1031002172 has 6 divisors (see below), whose sum is σ = 1804253808. Its totient is φ = 515501084.

The previous prime is 1031002157. The next prime is 1031002177. The reversal of 1031002172 is 2712001301.

It is a self number, because there is not a number n which added to its sum of digits gives 1031002172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031002177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128875268 + ... + 128875275.

It is an arithmetic number, because the mean of its divisors is an integer number (300708968).

Almost surely, 2^1031002172 is an apocalyptic number.

It is an amenable number.

1031002172 is a deficient number, since it is larger than the sum of its proper divisors (773251636).

1031002172 is a wasteful number, since it uses less digits than its factorization.

1031002172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257750547 (or 257750545 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 1031002172 is about 32109.2225380809. Note that the first 3 decimals coincide. The cubic root of 1031002172 is about 1010.2290667579.

Adding to 1031002172 its reverse (2712001301), we get a palindrome (3743003473).

The spelling of 1031002172 in words is "one billion, thirty-one million, two thousand, one hundred seventy-two".