31470152217 has 16 divisors (see below), whose sum is σ = 48096826752. Its totient is φ = 17929578240.

The previous prime is 31470152213. The next prime is 31470152239. The reversal of 31470152217 is 71225107413.

It is not a de Polignac number, because 31470152217 - 2² = 31470152213 is a prime.

It is a super-2 number, since 2×31470152217² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31470152213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2216334 + ... + 2230487.

It is an arithmetic number, because the mean of its divisors is an integer number (3006051672).

Almost surely, 2^31470152217 is an apocalyptic number.

It is an amenable number.

31470152217 is a deficient number, since it is larger than the sum of its proper divisors (16626674535).

31470152217 is a wasteful number, since it uses less digits than its factorization.

31470152217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4447168.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 31470152217 in words is "thirty-one billion, four hundred seventy million, one hundred fifty-two thousand, two hundred seventeen".