1233213131 has 8 divisors (see below), whose sum is σ = 1247970000. Its totient is φ = 1218506400.

The previous prime is 1233213101. The next prime is 1233213151. The reversal of 1233213131 is 1313123321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1233213131 - 2¹⁴ = 1233196747 is a prime.

It is a super-2 number, since 2×1233213131² = 3041629252941646322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233213101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38165 + ... + 62633.

It is an arithmetic number, because the mean of its divisors is an integer number (155996250).

Almost surely, 2^1233213131 is an apocalyptic number.

1233213131 is a deficient number, since it is larger than the sum of its proper divisors (14756869).

1233213131 is a wasteful number, since it uses less digits than its factorization.

1233213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25069.

The product of its digits is 324, while the sum is 20.

The square root of 1233213131 is about 35117.1344360556. The cubic root of 1233213131 is about 1072.3734343866.

Adding to 1233213131 its reverse (1313123321), we get a palindrome (2546336452).

The spelling of 1233213131 in words is "one billion, two hundred thirty-three million, two hundred thirteen thousand, one hundred thirty-one".