31257339716 has 6 divisors (see below), whose sum is σ = 54700344510. Its totient is φ = 15628669856.

The previous prime is 31257339713. The next prime is 31257339719. The reversal of 31257339716 is 61793375213.

It is an interprime number because it is at equal distance from previous prime (31257339713) and next prime (31257339719).

It can be written as a sum of positive squares in only one way, i.e., 31240562500 + 16777216 = 176750^2 + 4096^2 .

It is a super-2 number, since 2×31257339716² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31257339713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3907167461 + ... + 3907167468.

It is an arithmetic number, because the mean of its divisors is an integer number (9116724085).

Almost surely, 2^31257339716 is an apocalyptic number.

It is an amenable number.

31257339716 is a deficient number, since it is larger than the sum of its proper divisors (23443004794).

31257339716 is a wasteful number, since it uses less digits than its factorization.

31257339716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814334933 (or 7814334931 counting only the distinct ones).

The product of its digits is 714420, while the sum is 47.

The spelling of 31257339716 in words is "thirty-one billion, two hundred fifty-seven million, three hundred thirty-nine thousand, seven hundred sixteen".