1913431 has 8 divisors (see below), whose sum is σ = 2082080. Its totient is φ = 1747872.

The previous prime is 1913419. The next prime is 1913437. The reversal of 1913431 is 1343191.

1913431 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1913431 - 2⁹ = 1912919 is a prime.

It is a super-2 number, since 2×1913431² = 7322436383522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625 + ... + 2053.

It is an arithmetic number, because the mean of its divisors is an integer number (260260).

2^1913431 is an apocalyptic number.

1913431 is a deficient number, since it is larger than the sum of its proper divisors (168649).

1913431 is a wasteful number, since it uses less digits than its factorization.

1913431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545.

The product of its digits is 324, while the sum is 22.

The square root of 1913431 is about 1383.2682313998. The cubic root of 1913431 is about 124.1473923708.

The spelling of 1913431 in words is "one million, nine hundred thirteen thousand, four hundred thirty-one".