11431900000 has 72 divisors (see below), whose sum is σ = 28131636960. Its totient is φ = 4572720000.

The previous prime is 11431899943. The next prime is 11431900033. The reversal of 11431900000 is 913411.

It is a happy number.

It is a super-2 number, since 2×11431900000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42841 + ... + 157159.

It is an arithmetic number, because the mean of its divisors is an integer number (390717180).

Almost surely, 2^11431900000 is an apocalyptic number.

11431900000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11431900000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14065818480).

11431900000 is an abundant number, since it is smaller than the sum of its proper divisors (16699736960).

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

11431900000 is an frugal number, since it uses more digits than its factorization.

11431900000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114354 (or 114326 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The spelling of 11431900000 in words is "eleven billion, four hundred thirty-one million, nine hundred thousand".