2131458981 has 8 divisors (see below), whose sum is σ = 2849252640. Its totient is φ = 1417318992.

The previous prime is 2131458937. The next prime is 2131458983. The reversal of 2131458981 is 1898541312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131458981 - 2¹⁰ = 2131457957 is a prime.

It is a super-2 number, since 2×2131458981² = 9086234775371116722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131458983) 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, 912055 + ... + 914388.

It is an arithmetic number, because the mean of its divisors is an integer number (356156580).

Almost surely, 2^2131458981 is an apocalyptic number.

It is an amenable number.

2131458981 is a deficient number, since it is larger than the sum of its proper divisors (717793659).

2131458981 is a wasteful number, since it uses less digits than its factorization.

2131458981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826835.

The product of its digits is 69120, while the sum is 42.

The square root of 2131458981 is about 46167.7266171944. The cubic root of 2131458981 is about 1286.9420549882.

The spelling of 2131458981 in words is "two billion, one hundred thirty-one million, four hundred fifty-eight thousand, nine hundred eighty-one".