1723231040 has 56 divisors (see below), whose sum is σ = 4244964840. Its totient is φ = 665520128.

The previous prime is 1723231039. The next prime is 1723231043. The reversal of 1723231040 is 401323271.

It can be written as a sum of positive squares in 4 ways, for example, as 536015104 + 1187215936 = 23152^2 + 34456^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1723230997 and 1723231015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1723231043) 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, 83567 + ... + 102126.

Almost surely, 2^1723231040 is an apocalyptic number.

1723231040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1723231040 is an abundant number, since it is smaller than the sum of its proper divisors (2521733800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1723231040 is a wasteful number, since it uses less digits than its factorization.

1723231040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185739 (or 185729 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 1723231040 is about 41511.8180763021. The cubic root of 1723231040 is about 1198.8950569704.

The spelling of 1723231040 in words is "one billion, seven hundred twenty-three million, two hundred thirty-one thousand, forty".