201431313131 has 2 divisors, whose sum is σ = 201431313132. Its totient is φ = 201431313130.

The previous prime is 201431313119. The next prime is 201431313157. The reversal of 201431313131 is 131313134102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201431313131 - 2³⁰ = 200357571307 is a prime.

It is a super-2 number, since 2×201431313131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201431313097 and 201431313106.

It is not a weakly prime, because it can be changed into another prime (201431313631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100715656565 + 100715656566.

It is an arithmetic number, because the mean of its divisors is an integer number (100715656566).

Almost surely, 2^201431313131 is an apocalyptic number.

201431313131 is a deficient number, since it is larger than the sum of its proper divisors (1).

201431313131 is an equidigital number, since it uses as much as digits as its factorization.

201431313131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 201431313131 its reverse (131313134102), we get a palindrome (332744447233).

The spelling of 201431313131 in words is "two hundred one billion, four hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".