31233001221197 has 4 divisors (see below), whose sum is σ = 31233016172160. Its totient is φ = 31232986270236.

The previous prime is 31233001221151. The next prime is 31233001221259. The reversal of 31233001221197 is 79112210033213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31233001221197 - 2¹⁰ = 31233001220173 is a prime.

It is a super-2 number, since 2×31233001221197² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233001229197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3709547 + ... + 8730792.

It is an arithmetic number, because the mean of its divisors is an integer number (7808254043040).

Almost surely, 2^{31233001221197} is an apocalyptic number.

It is an amenable number.

31233001221197 is a deficient number, since it is larger than the sum of its proper divisors (14950963).

31233001221197 is a wasteful number, since it uses less digits than its factorization.

31233001221197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14950962.

The product of its (nonzero) digits is 13608, while the sum is 35.

The spelling of 31233001221197 in words is "thirty-one trillion, two hundred thirty-three billion, one million, two hundred twenty-one thousand, one hundred ninety-seven".