1996247131 has 4 divisors (see below), whose sum is σ = 1997248752. Its totient is φ = 1995245512.

The previous prime is 1996247107. The next prime is 1996247189. The reversal of 1996247131 is 1317426991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1317426991 = 43 ⋅30637837.

It is a cyclic number.

It is not a de Polignac number, because 1996247131 - 2⁹ = 1996246619 is a prime.

It is a super-2 number, since 2×1996247131² = 7970005216051462322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996247531) 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, 497815 + ... + 501808.

It is an arithmetic number, because the mean of its divisors is an integer number (499312188).

Almost surely, 2^1996247131 is an apocalyptic number.

1996247131 is a deficient number, since it is larger than the sum of its proper divisors (1001621).

1996247131 is an equidigital number, since it uses as much as digits as its factorization.

1996247131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001620.

The product of its digits is 81648, while the sum is 43.

The square root of 1996247131 is about 44679.3814975096. The cubic root of 1996247131 is about 1259.1325033619.

The spelling of 1996247131 in words is "one billion, nine hundred ninety-six million, two hundred forty-seven thousand, one hundred thirty-one".