31230400045 has 8 divisors (see below), whose sum is σ = 40359286296. Its totient is φ = 23062449216.

The previous prime is 31230400037. The next prime is 31230400049. The reversal of 31230400045 is 54000403213.

It can be written as a sum of positive squares in 4 ways, for example, as 1653967561 + 29576432484 = 40669^2 + 171978^2 .

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 31230400045 - 2³ = 31230400037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31230399989 and 31230400025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230400049) 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, 240233782 + ... + 240233911.

It is an arithmetic number, because the mean of its divisors is an integer number (5044910787).

Almost surely, 2^31230400045 is an apocalyptic number.

It is an amenable number.

31230400045 is a deficient number, since it is larger than the sum of its proper divisors (9128886251).

31230400045 is a wasteful number, since it uses less digits than its factorization.

31230400045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480467711.

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 31230400045 its reverse (54000403213), we get a palindrome (85230803258).

The spelling of 31230400045 in words is "thirty-one billion, two hundred thirty million, four hundred thousand, forty-five".