1232011831 has 2 divisors, whose sum is σ = 1232011832. Its totient is φ = 1232011830.

The previous prime is 1232011801. The next prime is 1232011853. The reversal of 1232011831 is 1381102321.

It is a happy number.

It is an a-pointer prime, because the next prime (1232011853) can be obtained adding 1232011831 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1232011831 - 2¹³ = 1232003639 is a prime.

It is a super-2 number, since 2×1232011831² = 3035706303447945122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232011801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616005915 + 616005916.

It is an arithmetic number, because the mean of its divisors is an integer number (616005916).

Almost surely, 2^1232011831 is an apocalyptic number.

1232011831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232011831 is an equidigital number, since it uses as much as digits as its factorization.

1232011831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1232011831 is about 35100.0260826114. The cubic root of 1232011831 is about 1072.0251137537.

The spelling of 1232011831 in words is "one billion, two hundred thirty-two million, eleven thousand, eight hundred thirty-one".