231545411203400 has 192 divisors, whose sum is σ = 620216097914880. Its totient is φ = 78746359507200.

The previous prime is 231545411203387. The next prime is 231545411203493. The reversal of 231545411203400 is 4302114545132.

It is a super-2 number, since 2×231545411203400² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 919277879 + ... + 919529721.

It is an arithmetic number, because the mean of its divisors is an integer number (3230292176640).

Almost surely, 2^{231545411203400} is an apocalyptic number.

231545411203400 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 231545411203400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310108048957440).

231545411203400 is an abundant number, since it is smaller than the sum of its proper divisors (388670686711480).

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

231545411203400 is a wasteful number, since it uses less digits than its factorization.

231545411203400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257164 (or 257155 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 231545411203400 its reverse (4302114545132), we get a palindrome (235847525748532).

The spelling of 231545411203400 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred eleven million, two hundred three thousand, four hundred".