31544234345 has 8 divisors (see below), whose sum is σ = 40764856776. Its totient is φ = 23294203776.

The previous prime is 31544234341. The next prime is 31544234347. The reversal of 31544234345 is 54343244513.

It can be written as a sum of positive squares in 4 ways, for example, as 1955762176 + 29588472169 = 44224^2 + 172013^2 .

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 31544234345 - 2² = 31544234341 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31544234299 and 31544234308.

It is not an unprimeable number, because it can be changed into a prime (31544234341) 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, 242647892 + ... + 242648021.

It is an arithmetic number, because the mean of its divisors is an integer number (5095607097).

Almost surely, 2^31544234345 is an apocalyptic number.

It is an amenable number.

31544234345 is a deficient number, since it is larger than the sum of its proper divisors (9220622431).

31544234345 is a wasteful number, since it uses less digits than its factorization.

31544234345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485295931.

The product of its digits is 345600, while the sum is 38.

Adding to 31544234345 its reverse (54343244513), we get a palindrome (85887478858).

The spelling of 31544234345 in words is "thirty-one billion, five hundred forty-four million, two hundred thirty-four thousand, three hundred forty-five".