1954431 has 12 divisors (see below), whose sum is σ = 2835352. Its totient is φ = 1297296.

The previous prime is 1954427. The next prime is 1954441. The reversal of 1954431 is 1344591.

It is not a de Polignac number, because 1954431 - 2² = 1954427 is a prime.

It is a super-2 number, since 2×1954431² = 7639601067522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

1954431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1954395 and 1954404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3300 + ... + 3846.

2^1954431 is an apocalyptic number.

1954431 is a deficient number, since it is larger than the sum of its proper divisors (880921).

1954431 is a wasteful number, since it uses less digits than its factorization.

1954431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950 (or 947 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1954431 is about 1398.0096566190. The cubic root of 1954431 is about 125.0278551256.

Subtracting from 1954431 its sum of digits (27), we obtain a square (1954404 = 1398²).

Adding to 1954431 its product of digits (2160), we get a palindrome (1956591).

The spelling of 1954431 in words is "one million, nine hundred fifty-four thousand, four hundred thirty-one".