31520481403 has 2 divisors, whose sum is σ = 31520481404. Its totient is φ = 31520481402.

The previous prime is 31520481361. The next prime is 31520481407. The reversal of 31520481403 is 30418402513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31520481403 - 2³³ = 22930546811 is a prime.

It is not a weakly prime, because it can be changed into another prime (31520481407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15760240701 + 15760240702.

It is an arithmetic number, because the mean of its divisors is an integer number (15760240702).

Almost surely, 2^31520481403 is an apocalyptic number.

31520481403 is a deficient number, since it is larger than the sum of its proper divisors (1).

31520481403 is an equidigital number, since it uses as much as digits as its factorization.

31520481403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 31520481403 its reverse (30418402513), we get a palindrome (61938883916).

The spelling of 31520481403 in words is "thirty-one billion, five hundred twenty million, four hundred eighty-one thousand, four hundred three".