31361366610331 has 64 divisors (see below), whose sum is σ = 35093218406400. Its totient is φ = 27900087659136.

The previous prime is 31361366610257. The next prime is 31361366610433. The reversal of 31361366610331 is 13301666316313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31361366610331 - 2⁹ = 31361366609819 is a prime.

It is a super-2 number, since 2×31361366610331² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31361366610631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11688916516 + ... + 11688919198.

It is an arithmetic number, because the mean of its divisors is an integer number (548331537600).

Almost surely, 2^{31361366610331} is an apocalyptic number.

31361366610331 is a deficient number, since it is larger than the sum of its proper divisors (3731851796069).

31361366610331 is a wasteful number, since it uses less digits than its factorization.

31361366610331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4688.

The product of its (nonzero) digits is 314928, while the sum is 43.

The spelling of 31361366610331 in words is "thirty-one trillion, three hundred sixty-one billion, three hundred sixty-six million, six hundred ten thousand, three hundred thirty-one".