31445555054113 has 6 divisors (see below), whose sum is σ = 32872196493794. Its totient is φ = 30078357007776.

The previous prime is 31445555054107. The next prime is 31445555054131. The reversal of 31445555054113 is 31145055554413.

It can be written as a sum of positive squares in only one way, i.e., 21777230225664 + 9668324828449 = 4666608^2 + 3109393^2 .

It is a de Polignac number, because none of the positive numbers 2^k-31445555054113 is a prime.

It is a super-2 number, since 2×31445555054113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31445555054153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29721696120 + ... + 29721697177.

Almost surely, 2^{31445555054113} is an apocalyptic number.

It is an amenable number.

31445555054113 is a deficient number, since it is larger than the sum of its proper divisors (1426641439681).

31445555054113 is an equidigital number, since it uses as much as digits as its factorization.

31445555054113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59443393343 (or 59443393320 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 46.

The spelling of 31445555054113 in words is "thirty-one trillion, four hundred forty-five billion, five hundred fifty-five million, fifty-four thousand, one hundred thirteen".