31420103244131 has 24 divisors (see below), whose sum is σ = 38140458089760. Its totient is φ = 25759625603712.

The previous prime is 31420103244091. The next prime is 31420103244157. The reversal of 31420103244131 is 13144230102413.

It is not a de Polignac number, because 31420103244131 - 2¹⁸ = 31420102981987 is a prime.

It is a super-2 number, since 2×31420103244131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31420103244094 and 31420103244103.

It is not an unprimeable number, because it can be changed into a prime (31420103244331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30702065 + ... + 31708941.

It is an arithmetic number, because the mean of its divisors is an integer number (1589185753740).

Almost surely, 2^{31420103244131} is an apocalyptic number.

31420103244131 is a deficient number, since it is larger than the sum of its proper divisors (6720354845629).

31420103244131 is a wasteful number, since it uses less digits than its factorization.

31420103244131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034603 (or 1034596 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 31420103244131 its reverse (13144230102413), we get a palindrome (44564333346544).

The spelling of 31420103244131 in words is "thirty-one trillion, four hundred twenty billion, one hundred three million, two hundred forty-four thousand, one hundred thirty-one".