12642031 has 2 divisors, whose sum is σ = 12642032. Its totient is φ = 12642030.

The previous prime is 12642001. The next prime is 12642041. The reversal of 12642031 is 13024621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12642031 - 2²³ = 4253423 is a prime.

It is a super-2 number, since 2×12642031² = 319641895609922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12642001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6321015 + 6321016.

It is an arithmetic number, because the mean of its divisors is an integer number (6321016).

Almost surely, 2^12642031 is an apocalyptic number.

12642031 is a deficient number, since it is larger than the sum of its proper divisors (1).

12642031 is an equidigital number, since it uses as much as digits as its factorization.

12642031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 12642031 is about 3555.5633871442. The cubic root of 12642031 is about 232.9551326724.

Adding to 12642031 its reverse (13024621), we get a palindrome (25666652).

The spelling of 12642031 in words is "twelve million, six hundred forty-two thousand, thirty-one".