31503042554013 has 24 divisors (see below), whose sum is σ = 46378419567480. Its totient is φ = 20598896448000.

The previous prime is 31503042553999. The next prime is 31503042554021. The reversal of 31503042554013 is 31045524030513.

31503042554013 is a `hidden beast` number, since 3 + 1 + 50 + 3 + 0 + 42 + 554 + 0 + 13 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2339348837049 + 29163693716964 = 1529493^2 + 5400342^2 .

It is not a de Polignac number, because 31503042554013 - 2⁶ = 31503042553949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31503042534013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9572208 + ... + 12435161.

It is an arithmetic number, because the mean of its divisors is an integer number (1932434148645).

Almost surely, 2^{31503042554013} is an apocalyptic number.

It is an amenable number.

31503042554013 is a deficient number, since it is larger than the sum of its proper divisors (14875377013467).

31503042554013 is a wasteful number, since it uses less digits than its factorization.

31503042554013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22010429 (or 22010426 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

Adding to 31503042554013 its reverse (31045524030513), we get a palindrome (62548566584526).

The spelling of 31503042554013 in words is "thirty-one trillion, five hundred three billion, forty-two million, five hundred fifty-four thousand, thirteen".