31686342201 has 24 divisors (see below), whose sum is σ = 47291751936. Its totient is φ = 20422825920.

The previous prime is 31686342101. The next prime is 31686342203. The reversal of 31686342201 is 10224368613.

31686342201 is a `hidden beast` number, since 3 + 16 + 8 + 634 + 2 + 2 + 0 + 1 = 666.

It is not a de Polignac number, because 31686342201 - 2¹⁴ = 31686325817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31686342203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233236 + ... + 343178.

It is an arithmetic number, because the mean of its divisors is an integer number (1970489664).

Almost surely, 2^31686342201 is an apocalyptic number.

31686342201 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31686342201 is a deficient number, since it is larger than the sum of its proper divisors (15605409735).

31686342201 is a wasteful number, since it uses less digits than its factorization.

31686342201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111013 (or 111010 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 31686342201 in words is "thirty-one billion, six hundred eighty-six million, three hundred forty-two thousand, two hundred one".