31304442021045 has 32 divisors (see below), whose sum is σ = 50216364277632. Its totient is φ = 16652669908992.

The previous prime is 31304442020987. The next prime is 31304442021077. The reversal of 31304442021045 is 54012024440313.

It is not a de Polignac number, because 31304442021045 - 2¹⁵ = 31304441988277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31304442020997 and 31304442021015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7762129 + ... + 11084201.

It is an arithmetic number, because the mean of its divisors is an integer number (1569261383676).

Almost surely, 2^{31304442021045} is an apocalyptic number.

It is an amenable number.

31304442021045 is a deficient number, since it is larger than the sum of its proper divisors (18911922256587).

31304442021045 is a wasteful number, since it uses less digits than its factorization.

31304442021045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323701.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 31304442021045 its reverse (54012024440313), we get a palindrome (85316466461358).

The spelling of 31304442021045 in words is "thirty-one trillion, three hundred four billion, four hundred forty-two million, twenty-one thousand, forty-five".