1331022220031 has 16 divisors (see below), whose sum is σ = 1556904518400. Its totient is φ = 1114086270528.

The previous prime is 1331022220013. The next prime is 1331022220069. The reversal of 1331022220031 is 1300222201331.

It is not a de Polignac number, because 1331022220031 - 2¹⁸ = 1331021957887 is a prime.

It is a super-2 number, since 2×1331022220031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331022219985 and 1331022220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331022220531) 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, 796475 + ... + 1815603.

It is an arithmetic number, because the mean of its divisors is an integer number (97306532400).

Almost surely, 2^{1331022220031} is an apocalyptic number.

1331022220031 is a deficient number, since it is larger than the sum of its proper divisors (225882298369).

1331022220031 is a wasteful number, since it uses less digits than its factorization.

1331022220031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023518.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1331022220031 its reverse (1300222201331), we get a palindrome (2631244421362).

The spelling of 1331022220031 in words is "one trillion, three hundred thirty-one billion, twenty-two million, two hundred twenty thousand, thirty-one".