31230022211405 has 8 divisors (see below), whose sum is σ = 37476325364472. Its totient is φ = 24983818628608.

The previous prime is 31230022211371. The next prime is 31230022211449. The reversal of 31230022211405 is 50411222003213.

It can be written as a sum of positive squares in 4 ways, for example, as 1496154634276 + 29733867577129 = 1223174^2 + 5452877^2 .

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 31230022211405 - 2²⁴ = 31230005434189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24200792 + ... + 25458561.

It is an arithmetic number, because the mean of its divisors is an integer number (4684540670559).

Almost surely, 2^{31230022211405} is an apocalyptic number.

It is an amenable number.

31230022211405 is a deficient number, since it is larger than the sum of its proper divisors (6246303153067).

31230022211405 is a wasteful number, since it uses less digits than its factorization.

31230022211405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49785135.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 31230022211405 its reverse (50411222003213), we get a palindrome (81641244214618).

The spelling of 31230022211405 in words is "thirty-one trillion, two hundred thirty billion, twenty-two million, two hundred eleven thousand, four hundred five".