2031397400 has 48 divisors (see below), whose sum is σ = 4832856600. Its totient is φ = 793658880.

The previous prime is 2031397397. The next prime is 2031397411. The reversal of 2031397400 is 47931302.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109505 + ... + 126704.

Almost surely, 2^2031397400 is an apocalyptic number.

2031397400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031397400 is an abundant number, since it is smaller than the sum of its proper divisors (2801459200).

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

2031397400 is a wasteful number, since it uses less digits than its factorization.

2031397400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236268 (or 236259 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2031397400 is about 45071.0261698134. The cubic root of 2031397400 is about 1266.4798878181.

The spelling of 2031397400 in words is "two billion, thirty-one million, three hundred ninety-seven thousand, four hundred".