31404220022021 has 48 divisors (see below), whose sum is σ = 40157868182400. Its totient is φ = 24283612080000.

The previous prime is 31404220022017. The next prime is 31404220022051. The reversal of 31404220022021 is 12022002240413.

It is not a de Polignac number, because 31404220022021 - 2² = 31404220022017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404220022051) 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, 85025696 + ... + 85394246.

It is an arithmetic number, because the mean of its divisors is an integer number (836622253800).

Almost surely, 2^{31404220022021} is an apocalyptic number.

It is an amenable number.

31404220022021 is a deficient number, since it is larger than the sum of its proper divisors (8753648160379).

31404220022021 is a wasteful number, since it uses less digits than its factorization.

31404220022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369786 (or 369779 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 31404220022021 its reverse (12022002240413), we get a palindrome (43426222262434).

The spelling of 31404220022021 in words is "thirty-one trillion, four hundred four billion, two hundred twenty million, twenty-two thousand, twenty-one".