31465251355145 has 32 divisors (see below), whose sum is σ = 38701254176640. Its totient is φ = 24545543500800.

The previous prime is 31465251355141. The next prime is 31465251355199. The reversal of 31465251355145 is 54155315256413.

It is not a de Polignac number, because 31465251355145 - 2² = 31465251355141 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31465251355093 and 31465251355102.

It is not an unprimeable number, because it can be changed into a prime (31465251355141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1135874795 + ... + 1135902495.

It is an arithmetic number, because the mean of its divisors is an integer number (1209414193020).

Almost surely, 2^{31465251355145} is an apocalyptic number.

It is an amenable number.

31465251355145 is a deficient number, since it is larger than the sum of its proper divisors (7236002821495).

31465251355145 is a wasteful number, since it uses less digits than its factorization.

31465251355145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36425.

The product of its digits is 5400000, while the sum is 50.

The spelling of 31465251355145 in words is "thirty-one trillion, four hundred sixty-five billion, two hundred fifty-one million, three hundred fifty-five thousand, one hundred forty-five".