31415451131 has 2 divisors, whose sum is σ = 31415451132. Its totient is φ = 31415451130.

The previous prime is 31415451103. The next prime is 31415451161. The reversal of 31415451131 is 13115451413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31415451131 - 2³⁴ = 14235581947 is a prime.

It is a super-2 number, since 2×31415451131² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31415451094 and 31415451103.

It is not a weakly prime, because it can be changed into another prime (31415451161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15707725565 + 15707725566.

It is an arithmetic number, because the mean of its divisors is an integer number (15707725566).

Almost surely, 2^31415451131 is an apocalyptic number.

31415451131 is a deficient number, since it is larger than the sum of its proper divisors (1).

31415451131 is an equidigital number, since it uses as much as digits as its factorization.

31415451131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

The spelling of 31415451131 in words is "thirty-one billion, four hundred fifteen million, four hundred fifty-one thousand, one hundred thirty-one".