31232331123011 has 4 divisors (see below), whose sum is σ = 31232381578272. Its totient is φ = 31232280667752.

The previous prime is 31232331122989. The next prime is 31232331123073. The reversal of 31232331123011 is 11032113323213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232331123011 is a prime.

It is a super-2 number, since 2×31232331123011² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31232331129011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24287435 + ... + 25541028.

It is an arithmetic number, because the mean of its divisors is an integer number (7808095394568).

Almost surely, 2^{31232331123011} is an apocalyptic number.

31232331123011 is a deficient number, since it is larger than the sum of its proper divisors (50455261).

31232331123011 is an equidigital number, since it uses as much as digits as its factorization.

31232331123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50455260.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31232331123011 its reverse (11032113323213), we get a palindrome (42264444446224).

The spelling of 31232331123011 in words is "thirty-one trillion, two hundred thirty-two billion, three hundred thirty-one million, one hundred twenty-three thousand, eleven".