2531145345 has 16 divisors (see below), whose sum is σ = 4089932352. Its totient is φ = 1336577600.

The previous prime is 2531145313. The next prime is 2531145361. The reversal of 2531145345 is 5435411352.

2531145345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2531145345 - 2⁵ = 2531145313 is a prime.

It is a super-3 number, since 3×2531145345³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833847 + ... + 836876.

It is an arithmetic number, because the mean of its divisors is an integer number (255620772).

Almost surely, 2^2531145345 is an apocalyptic number.

It is an amenable number.

2531145345 is a deficient number, since it is larger than the sum of its proper divisors (1558787007).

2531145345 is a wasteful number, since it uses less digits than its factorization.

2531145345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670832.

The product of its digits is 36000, while the sum is 33.

The square root of 2531145345 is about 50310.4894132426. The cubic root of 2531145345 is about 1362.8216620684.

Adding to 2531145345 its reverse (5435411352), we get a palindrome (7966556697).

The spelling of 2531145345 in words is "two billion, five hundred thirty-one million, one hundred forty-five thousand, three hundred forty-five".