31380601220529 has 16 divisors (see below), whose sum is σ = 45972888648960. Its totient is φ = 18881722118160.

The previous prime is 31380601220513. The next prime is 31380601220543. The reversal of 31380601220529 is 92502210608313.

It is not a de Polignac number, because 31380601220529 - 2⁴ = 31380601220513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31380601220509) 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, 3420597247 + ... + 3420606420.

It is an arithmetic number, because the mean of its divisors is an integer number (2873305540560).

Almost surely, 2^{31380601220529} is an apocalyptic number.

It is an amenable number.

31380601220529 is a deficient number, since it is larger than the sum of its proper divisors (14592287428431).

31380601220529 is a wasteful number, since it uses less digits than its factorization.

31380601220529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6841203820.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 31380601220529 in words is "thirty-one trillion, three hundred eighty billion, six hundred one million, two hundred twenty thousand, five hundred twenty-nine".