31301103320131 has 4 divisors (see below), whose sum is σ = 31540043040264. Its totient is φ = 31062163600000.

The previous prime is 31301103320027. The next prime is 31301103320143. The reversal of 31301103320131 is 13102330110313.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31301103320131 - 2¹³ = 31301103311939 is a prime.

It is a super-2 number, since 2×31301103320131² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31301103320171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119469859870 + ... + 119469860131.

It is an arithmetic number, because the mean of its divisors is an integer number (7885010760066).

Almost surely, 2^{31301103320131} is an apocalyptic number.

31301103320131 is a deficient number, since it is larger than the sum of its proper divisors (238939720133).

31301103320131 is a wasteful number, since it uses less digits than its factorization.

31301103320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238939720132.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 31301103320131 its reverse (13102330110313), we get a palindrome (44403433430444).

The spelling of 31301103320131 in words is "thirty-one trillion, three hundred one billion, one hundred three million, three hundred twenty thousand, one hundred thirty-one".