331021401123 has 16 divisors (see below), whose sum is σ = 505345953536. Its totient is φ = 188805440160.

The previous prime is 331021401121. The next prime is 331021401127. The reversal of 331021401123 is 321104120133.

It is not a de Polignac number, because 331021401123 - 2¹ = 331021401121 is a prime.

It is a super-2 number, since 2×331021401123² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 331021401123.

It is not an unprimeable number, because it can be changed into a prime (331021401121) 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, 14556961 + ... + 14579682.

It is an arithmetic number, because the mean of its divisors is an integer number (31584122096).

Almost surely, 2^331021401123 is an apocalyptic number.

331021401123 is a deficient number, since it is larger than the sum of its proper divisors (174324552413).

331021401123 is a wasteful number, since it uses less digits than its factorization.

331021401123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29137194.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 331021401123 its reverse (321104120133), we get a palindrome (652125521256).

The spelling of 331021401123 in words is "three hundred thirty-one billion, twenty-one million, four hundred one thousand, one hundred twenty-three".