1231400453 has 8 divisors (see below), whose sum is σ = 1240618368. Its totient is φ = 1222217424.

The previous prime is 1231400419. The next prime is 1231400459. The reversal of 1231400453 is 3540041321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231400453 - 2¹⁶ = 1231334917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231400459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64400 + ... + 81302.

It is an arithmetic number, because the mean of its divisors is an integer number (155077296).

Almost surely, 2^1231400453 is an apocalyptic number.

It is an amenable number.

1231400453 is a deficient number, since it is larger than the sum of its proper divisors (9217915).

1231400453 is a wasteful number, since it uses less digits than its factorization.

1231400453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17443.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1231400453 is about 35091.3159200392. The cubic root of 1231400453 is about 1071.8477558750.

Adding to 1231400453 its reverse (3540041321), we get a palindrome (4771441774).

The spelling of 1231400453 in words is "one billion, two hundred thirty-one million, four hundred thousand, four hundred fifty-three".