31304442021043 has 64 divisors (see below), whose sum is σ = 33890382892800. Its totient is φ = 28857734922240.

The previous prime is 31304442020987. The next prime is 31304442021077. The reversal of 31304442021043 is 34012024440313.

It is a cyclic number.

It is not a de Polignac number, because 31304442021043 - 2³³ = 31295852086451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31304442020996 and 31304442021014.

It is not an unprimeable number, because it can be changed into a prime (31304442021143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9755200023 + ... + 9755203231.

It is an arithmetic number, because the mean of its divisors is an integer number (529537232700).

Almost surely, 2^{31304442021043} is an apocalyptic number.

31304442021043 is a deficient number, since it is larger than the sum of its proper divisors (2585940871757).

31304442021043 is a wasteful number, since it uses less digits than its factorization.

31304442021043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 31304442021043 its reverse (34012024440313), we get a palindrome (65316466461356).

The spelling of 31304442021043 in words is "thirty-one trillion, three hundred four billion, four hundred forty-two million, twenty-one thousand, forty-three".