919431 has 10 divisors (see below), whose sum is σ = 1373592. Its totient is φ = 612900.

The previous prime is 919427. The next prime is 919447. The reversal of 919431 is 134919.

919431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 919431 - 2² = 919427 is a prime.

It is a super-2 number, since 2×919431² = 1690706727522, which contains 22 as substring.

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

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 919395 and 919404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919421) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5595 + ... + 5756.

2⁹¹⁹⁴³¹ is an apocalyptic number.

919431 is a deficient number, since it is larger than the sum of its proper divisors (454161).

919431 is a wasteful number, since it uses less digits than its factorization.

919431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363 (or 11354 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 919431 is about 958.8696470324. The cubic root of 919431 is about 97.2388276519.

The spelling of 919431 in words is "nine hundred nineteen thousand, four hundred thirty-one".