31545422454513 has 16 divisors (see below), whose sum is σ = 45939733652736. Its totient is φ = 19095320013840.

The previous prime is 31545422454499. The next prime is 31545422454529.

It is a happy number.

31545422454513 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31545422454513 - 2⁶ = 31545422454449 is a prime.

It is a super-2 number, since 2×31545422454513² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31545422454563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577918231 + ... + 577972812.

It is an arithmetic number, because the mean of its divisors is an integer number (2871233353296).

Almost surely, 2^{31545422454513} is an apocalyptic number.

31545422454513 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31545422454513 is a deficient number, since it is larger than the sum of its proper divisors (14394311198223).

31545422454513 is a wasteful number, since it uses less digits than its factorization.

31545422454513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155891884.

The product of its digits is 5760000, while the sum is 48.

The spelling of 31545422454513 in words is "thirty-one trillion, five hundred forty-five billion, four hundred twenty-two million, four hundred fifty-four thousand, five hundred thirteen".