31054421002521 has 48 divisors (see below), whose sum is σ = 50771614924800. Its totient is φ = 16788033132192.

The previous prime is 31054421002499. The next prime is 31054421002669. The reversal of 31054421002521 is 12520012445013.

It is not a de Polignac number, because 31054421002521 - 2⁵ = 31054421002489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31054425002521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5723865 + ... + 9740198.

It is an arithmetic number, because the mean of its divisors is an integer number (1057741977600).

Almost surely, 2^{31054421002521} is an apocalyptic number.

It is an amenable number.

31054421002521 is a deficient number, since it is larger than the sum of its proper divisors (19717193922279).

31054421002521 is a wasteful number, since it uses less digits than its factorization.

31054421002521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15464818 (or 15464811 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 31054421002521 its reverse (12520012445013), we get a palindrome (43574433447534).

The spelling of 31054421002521 in words is "thirty-one trillion, fifty-four billion, four hundred twenty-one million, two thousand, five hundred twenty-one".