231154400000 has 216 divisors, whose sum is σ = 579325139568. Its totient is φ = 92044800000.

The previous prime is 231154399951. The next prime is 231154400023. The reversal of 231154400000 is 4451132.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226399490 + ... + 226400510.

Almost surely, 2^231154400000 is an apocalyptic number.

231154400000 is a gapful number since it is divisible by the number (20) 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 231154400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289662569784).

231154400000 is an abundant number, since it is smaller than the sum of its proper divisors (348170739568).

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

231154400000 is an frugal number, since it uses more digits than its factorization.

231154400000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345 (or 1311 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 231154400000 its reverse (4451132), we get a palindrome (231158851132).

The spelling of 231154400000 in words is "two hundred thirty-one billion, one hundred fifty-four million, four hundred thousand".