2151731254 has 16 divisors (see below), whose sum is σ = 3274745760. Its totient is φ = 1060165120.

The previous prime is 2151731249. The next prime is 2151731261. The reversal of 2151731254 is 4521371512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499542 + ... + 503830.

It is an arithmetic number, because the mean of its divisors is an integer number (204671610).

Almost surely, 2^2151731254 is an apocalyptic number.

2151731254 is a deficient number, since it is larger than the sum of its proper divisors (1123014506).

2151731254 is a wasteful number, since it uses less digits than its factorization.

2151731254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7895.

The product of its digits is 8400, while the sum is 31.

The square root of 2151731254 is about 46386.7573128366. The cubic root of 2151731254 is about 1291.0092164549.

The spelling of 2151731254 in words is "two billion, one hundred fifty-one million, seven hundred thirty-one thousand, two hundred fifty-four".