131149643 has 2 divisors, whose sum is σ = 131149644. Its totient is φ = 131149642.

The previous prime is 131149639. The next prime is 131149649. The reversal of 131149643 is 346941131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131149643 - 2² = 131149639 is a prime.

It is not a weakly prime, because it can be changed into another prime (131149649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65574821 + 65574822.

It is an arithmetic number, because the mean of its divisors is an integer number (65574822).

Almost surely, 2^131149643 is an apocalyptic number.

131149643 is a deficient number, since it is larger than the sum of its proper divisors (1).

131149643 is an equidigital number, since it uses as much as digits as its factorization.

131149643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 131149643 is about 11452.0584612549. The cubic root of 131149643 is about 508.0686184098.

The spelling of 131149643 in words is "one hundred thirty-one million, one hundred forty-nine thousand, six hundred forty-three".