1531996 has 6 divisors (see below), whose sum is σ = 2681000. Its totient is φ = 765996.

The previous prime is 1531991. The next prime is 1531997. The reversal of 1531996 is 6991351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191496 + ... + 191503.

2^1531996 is an apocalyptic number.

It is an amenable number.

1531996 is a deficient number, since it is larger than the sum of its proper divisors (1149004).

1531996 is a wasteful number, since it uses less digits than its factorization.

1531996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383003 (or 383001 counting only the distinct ones).

The product of its digits is 7290, while the sum is 34.

The square root of 1531996 is about 1237.7382598918. The cubic root of 1531996 is about 115.2796220067.

The spelling of 1531996 in words is "one million, five hundred thirty-one thousand, nine hundred ninety-six".