231373426453 has 4 divisors (see below), whose sum is σ = 249171382348. Its totient is φ = 213575470560.

The previous prime is 231373426433. The next prime is 231373426457. The reversal of 231373426453 is 354624373132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71870639569 + 159502786884 = 268087^2 + 399378^2 .

It is a cyclic number.

It is not a de Polignac number, because 231373426453 - 2³⁷ = 93934472981 is a prime.

It is a super-2 number, since 2×231373426453² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231373426457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8898977928 + ... + 8898977953.

It is an arithmetic number, because the mean of its divisors is an integer number (62292845587).

Almost surely, 2^231373426453 is an apocalyptic number.

It is an amenable number.

231373426453 is a deficient number, since it is larger than the sum of its proper divisors (17797955895).

231373426453 is a wasteful number, since it uses less digits than its factorization.

231373426453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17797955894.

The product of its digits is 1088640, while the sum is 43.

Adding to 231373426453 its reverse (354624373132), we get a palindrome (585997799585).

The spelling of 231373426453 in words is "two hundred thirty-one billion, three hundred seventy-three million, four hundred twenty-six thousand, four hundred fifty-three".