499451131 has 2 divisors, whose sum is σ = 499451132. Its totient is φ = 499451130.

The previous prime is 499451087. The next prime is 499451159. The reversal of 499451131 is 131154994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499451131 - 2⁹ = 499450619 is a prime.

It is a super-2 number, since 2×499451131² = 498902864514358322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (499451191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249725565 + 249725566.

It is an arithmetic number, because the mean of its divisors is an integer number (249725566).

Almost surely, 2^499451131 is an apocalyptic number.

499451131 is a deficient number, since it is larger than the sum of its proper divisors (1).

499451131 is an equidigital number, since it uses as much as digits as its factorization.

499451131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 37.

The square root of 499451131 is about 22348.4033210429. The cubic root of 499451131 is about 793.4099945730.

It can be divided in two parts, 49945 and 1131, that added together give a square (51076 = 226²).

The spelling of 499451131 in words is "four hundred ninety-nine million, four hundred fifty-one thousand, one hundred thirty-one".