131233031 has 2 divisors, whose sum is σ = 131233032. Its totient is φ = 131233030.

The previous prime is 131233027. The next prime is 131233061. The reversal of 131233031 is 130332131.

It is a weak prime.

It is an emirp because it is prime and its reverse (130332131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131233031 - 2² = 131233027 is a prime.

It is a super-2 number, since 2×131233031² = 34444216850893922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131233061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65616515 + 65616516.

It is an arithmetic number, because the mean of its divisors is an integer number (65616516).

Almost surely, 2^131233031 is an apocalyptic number.

131233031 is a deficient number, since it is larger than the sum of its proper divisors (1).

131233031 is an equidigital number, since it uses as much as digits as its factorization.

131233031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131233031 is about 11455.6986255750. The cubic root of 131233031 is about 508.1762762193.

Adding to 131233031 its reverse (130332131), we get a palindrome (261565162).

It can be divided in two parts, 1312 and 33031, that added together give a palindrome (34343).

The spelling of 131233031 in words is "one hundred thirty-one million, two hundred thirty-three thousand, thirty-one".