1231497 has 16 divisors (see below), whose sum is σ = 1932480. Its totient is φ = 772416.

The previous prime is 1231487. The next prime is 1231511. The reversal of 1231497 is 7941321.

It is not a de Polignac number, because 1231497 - 2⁴ = 1231481 is a prime.

It is a super-2 number, since 2×1231497² = 3033169722018, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1231497.

It is not an unprimeable number, because it can be changed into a prime (1231457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 883 + ... + 1800.

It is an arithmetic number, because the mean of its divisors is an integer number (120780).

2^1231497 is an apocalyptic number.

1231497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1231497 is a deficient number, since it is larger than the sum of its proper divisors (700983).

1231497 is a wasteful number, since it uses less digits than its factorization.

1231497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2709 (or 2703 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 1231497 is about 1109.7283451368. The cubic root of 1231497 is about 107.1875767608.

It can be divided in two parts, 1231 and 497, that added together give a cube (1728 = 12³).

The spelling of 1231497 in words is "one million, two hundred thirty-one thousand, four hundred ninety-seven".