131001331 has 2 divisors, whose sum is σ = 131001332. Its totient is φ = 131001330.

The previous prime is 131001317. The next prime is 131001359. The reversal of 131001331 is 133100131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131001331 - 2⁹ = 131000819 is a prime.

It is a super-2 number, since 2×131001331² = 34322697447543122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131001301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65500665 + 65500666.

It is an arithmetic number, because the mean of its divisors is an integer number (65500666).

Almost surely, 2^131001331 is an apocalyptic number.

131001331 is a deficient number, since it is larger than the sum of its proper divisors (1).

131001331 is an equidigital number, since it uses as much as digits as its factorization.

131001331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 131001331 is about 11445.5812871169. The cubic root of 131001331 is about 507.8770278635.

Adding to 131001331 its reverse (133100131), we get a palindrome (264101462).

The spelling of 131001331 in words is "one hundred thirty-one million, one thousand, three hundred thirty-one".