1232513331 has 32 divisors (see below), whose sum is σ = 1902448128. Its totient is φ = 695208960.

The previous prime is 1232513309. The next prime is 1232513431. The reversal of 1232513331 is 1333152321.

It is not a de Polignac number, because 1232513331 - 2¹³ = 1232505139 is a prime.

It is a super-2 number, since 2×1232513331² = 3038178222185431122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1232513431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309321 + ... + 1310261.

It is an arithmetic number, because the mean of its divisors is an integer number (59451504).

Almost surely, 2^1232513331 is an apocalyptic number.

1232513331 is a deficient number, since it is larger than the sum of its proper divisors (669934797).

1232513331 is an equidigital number, since it uses as much as digits as its factorization.

1232513331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691.

The product of its digits is 1620, while the sum is 24.

The square root of 1232513331 is about 35107.1692251027. The cubic root of 1232513331 is about 1072.1705527421.

Adding to 1232513331 its reverse (1333152321), we get a palindrome (2565665652).

The spelling of 1232513331 in words is "one billion, two hundred thirty-two million, five hundred thirteen thousand, three hundred thirty-one".