31311251345045 has 32 divisors (see below), whose sum is σ = 43925663819520. Its totient is φ = 20981540736000.

The previous prime is 31311251344981. The next prime is 31311251345107. The reversal of 31311251345045 is 54054315211313.

It is not a de Polignac number, because 31311251345045 - 2⁶ = 31311251344981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33158660 + ... + 34089869.

It is an arithmetic number, because the mean of its divisors is an integer number (1372676994360).

Almost surely, 2^{31311251345045} is an apocalyptic number.

31311251345045 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31311251345045 is a deficient number, since it is larger than the sum of its proper divisors (12614412474475).

31311251345045 is a wasteful number, since it uses less digits than its factorization.

31311251345045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67248845.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 31311251345045 its reverse (54054315211313), we get a palindrome (85365566556358).

The spelling of 31311251345045 in words is "thirty-one trillion, three hundred eleven billion, two hundred fifty-one million, three hundred forty-five thousand, forty-five".