1693431 has 6 divisors (see below), whose sum is σ = 2446080. Its totient is φ = 1128948.

The previous prime is 1693429. The next prime is 1693441. The reversal of 1693431 is 1343961.

It is not a de Polignac number, because 1693431 - 2¹ = 1693429 is a prime.

It is a super-2 number, since 2×1693431² = 5735417103522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1693395 and 1693404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1693411) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94071 + ... + 94088.

It is an arithmetic number, because the mean of its divisors is an integer number (407680).

2^1693431 is an apocalyptic number.

1693431 is a deficient number, since it is larger than the sum of its proper divisors (752649).

1693431 is a wasteful number, since it uses less digits than its factorization.

1693431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188165 (or 188162 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1693431 is about 1301.3189463003. The cubic root of 1693431 is about 119.1943954469.

It can be divided in two parts, 169 and 3431, that added together give a square (3600 = 60²).

The spelling of 1693431 in words is "one million, six hundred ninety-three thousand, four hundred thirty-one".