31233001221152 has 48 divisors (see below), whose sum is σ = 61595196064920. Its totient is φ = 15589785434112.

The previous prime is 31233001221151. The next prime is 31233001221259. The reversal of 31233001221152 is 25112210033213.

It can be written as a sum of positive squares in 4 ways, for example, as 23078070113296 + 8154931107856 = 4803964^2 + 2855684^2 .

It is not an unprimeable number, because it can be changed into a prime (31233001221151) 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, 118745978 + ... + 119008710.

Almost surely, 2^{31233001221152} is an apocalyptic number.

31233001221152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31233001221152 is a deficient number, since it is larger than the sum of its proper divisors (30362194843768).

31233001221152 is a wasteful number, since it uses less digits than its factorization.

31233001221152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269085 (or 269077 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 31233001221152 its reverse (25112210033213), we get a palindrome (56345211254365).

The spelling of 31233001221152 in words is "thirty-one trillion, two hundred thirty-three billion, one million, two hundred twenty-one thousand, one hundred fifty-two".