31023200011231 has 8 divisors (see below), whose sum is σ = 32570636238720. Its totient is φ = 29492313904152.

The previous prime is 31023200011211. The next prime is 31023200011249. The reversal of 31023200011231 is 13211000232013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31023200011231 is a prime.

It is a super-2 number, since 2×31023200011231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31023200011199 and 31023200011208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023200011211) 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, 4137526261 + ... + 4137533758.

It is an arithmetic number, because the mean of its divisors is an integer number (4071329529840).

Almost surely, 2^{31023200011231} is an apocalyptic number.

31023200011231 is a deficient number, since it is larger than the sum of its proper divisors (1547436227489).

31023200011231 is a wasteful number, since it uses less digits than its factorization.

31023200011231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275060205.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31023200011231 its reverse (13211000232013), we get a palindrome (44234200243244).

The spelling of 31023200011231 in words is "thirty-one trillion, twenty-three billion, two hundred million, eleven thousand, two hundred thirty-one".