245315135331 has 16 divisors (see below), whose sum is σ = 415348377600. Its totient is φ = 140180077224.

The previous prime is 245315135323. The next prime is 245315135357. The reversal of 245315135331 is 133531513542.

245315135331 is a `hidden beast` number, since 2 + 4 + 5 + 315 + 1 + 3 + 5 + 331 = 666.

It is not a de Polignac number, because 245315135331 - 2³ = 245315135323 is a prime.

It is a super-2 number, since 2×245315135331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245315135231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 648981651 + ... + 648982028.

It is an arithmetic number, because the mean of its divisors is an integer number (25959273600).

Almost surely, 2^245315135331 is an apocalyptic number.

245315135331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

245315135331 is a deficient number, since it is larger than the sum of its proper divisors (170033242269).

245315135331 is a wasteful number, since it uses less digits than its factorization.

245315135331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297963695 (or 1297963689 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 245315135331 its reverse (133531513542), we get a palindrome (378846648873).

The spelling of 245315135331 in words is "two hundred forty-five billion, three hundred fifteen million, one hundred thirty-five thousand, three hundred thirty-one".