31423255345 has 8 divisors (see below), whose sum is σ = 39926018664. Its totient is φ = 23659862784.

The previous prime is 31423255343. The next prime is 31423255351. The reversal of 31423255345 is 54355232413.

It can be written as a sum of positive squares in 4 ways, for example, as 4968558144 + 26454697201 = 70488^2 + 162649^2 .

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 31423255345 - 2¹ = 31423255343 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31423255343) 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, 184842594 + ... + 184842763.

It is an arithmetic number, because the mean of its divisors is an integer number (4990752333).

Almost surely, 2^31423255345 is an apocalyptic number.

It is an amenable number.

31423255345 is a deficient number, since it is larger than the sum of its proper divisors (8502763319).

31423255345 is a wasteful number, since it uses less digits than its factorization.

31423255345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369685379.

The product of its digits is 216000, while the sum is 37.

Adding to 31423255345 its reverse (54355232413), we get a palindrome (85778487758).

The spelling of 31423255345 in words is "thirty-one billion, four hundred twenty-three million, two hundred fifty-five thousand, three hundred forty-five".