31445104355231 has 8 divisors (see below), whose sum is σ = 36012287723520. Its totient is φ = 26896677387768.

The previous prime is 31445104355177. The next prime is 31445104355237. The reversal of 31445104355231 is 13255340154413.

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 31445104355231 - 2⁶ = 31445104355167 is a prime.

It is a super-2 number, since 2×31445104355231² (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 (31445104355237) 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, 4689096611 + ... + 4689103316.

It is an arithmetic number, because the mean of its divisors is an integer number (4501535965440).

Almost surely, 2^{31445104355231} is an apocalyptic number.

31445104355231 is a deficient number, since it is larger than the sum of its proper divisors (4567183368289).

31445104355231 is an equidigital number, since it uses as much as digits as its factorization.

31445104355231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9378200413.

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 31445104355231 in words is "thirty-one trillion, four hundred forty-five billion, one hundred four million, three hundred fifty-five thousand, two hundred thirty-one".