31264172190 has 48 divisors (see below), whose sum is σ = 81330685488. Its totient is φ = 8332616448.

The previous prime is 31264172189. The next prime is 31264172243. The reversal of 31264172190 is 9127146213.

31264172190 is a `hidden beast` number, since 3 + 1 + 2 + 641 + 7 + 2 + 1 + 9 + 0 = 666.

It is a super-2 number, since 2×31264172190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75837 + ... + 261303.

It is an arithmetic number, because the mean of its divisors is an integer number (1694389281).

Almost surely, 2^31264172190 is an apocalyptic number.

31264172190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31264172190 is an abundant number, since it is smaller than the sum of its proper divisors (50066513298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31264172190 is a wasteful number, since it uses less digits than its factorization.

31264172190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187353 (or 187350 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 31264172190 in words is "thirty-one billion, two hundred sixty-four million, one hundred seventy-two thousand, one hundred ninety".