2531280521167 has 4 divisors (see below), whose sum is σ = 2532770387800. Its totient is φ = 2529790654536.

The previous prime is 2531280521131. The next prime is 2531280521171. The reversal of 2531280521167 is 7611250821352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2531280521167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531280525167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 744930768 + ... + 744934165.

It is an arithmetic number, because the mean of its divisors is an integer number (633192596950).

Almost surely, 2^{2531280521167} is an apocalyptic number.

2531280521167 is a deficient number, since it is larger than the sum of its proper divisors (1489866633).

2531280521167 is a wasteful number, since it uses less digits than its factorization.

2531280521167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489866632.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 2531280521167 in words is "two trillion, five hundred thirty-one billion, two hundred eighty million, five hundred twenty-one thousand, one hundred sixty-seven".