31707745346 has 8 divisors (see below), whose sum is σ = 47566905804. Its totient is φ = 15852110080.

The previous prime is 31707745343. The next prime is 31707745369. The reversal of 31707745346 is 64354770713.

It can be written as a sum of positive squares in 2 ways, for example, as 21210718321 + 10497027025 = 145639^2 + 102455^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×31707745346² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31707745346.

It is not an unprimeable number, because it can be changed into a prime (31707745343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858695 + ... + 894858.

Almost surely, 2^31707745346 is an apocalyptic number.

31707745346 is a deficient number, since it is larger than the sum of its proper divisors (15859160458).

31707745346 is a wasteful number, since it uses less digits than its factorization.

31707745346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762596.

The product of its (nonzero) digits is 1481760, while the sum is 47.

The spelling of 31707745346 in words is "thirty-one billion, seven hundred seven million, seven hundred forty-five thousand, three hundred forty-six".