231545401201503 has 96 divisors (see below), whose sum is σ = 355486502891520. Its totient is φ = 144822297600000.

The previous prime is 231545401201463. The next prime is 231545401201511. The reversal of 231545401201503 is 305102104545132.

231545401201503 is a `hidden beast` number, since 2 + 3 + 1 + 5 + 45 + 401 + 201 + 5 + 0 + 3 = 666.

It is not a de Polignac number, because 231545401201503 - 2¹⁰ = 231545401200479 is a prime.

It is a super-2 number, since 2×231545401201503² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231545401201553) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17486995963 + ... + 17487009203.

It is an arithmetic number, because the mean of its divisors is an integer number (3702984405120).

Almost surely, 2^{231545401201503} is an apocalyptic number.

231545401201503 is a deficient number, since it is larger than the sum of its proper divisors (123941101690017).

231545401201503 is a wasteful number, since it uses less digits than its factorization.

231545401201503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15821 (or 15818 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 231545401201503 its reverse (305102104545132), we get a palindrome (536647505746635).

The spelling of 231545401201503 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, two hundred one thousand, five hundred three".