231213454 has 8 divisors (see below), whose sum is σ = 353364120. Its totient is φ = 113425416.

The previous prime is 231213443. The next prime is 231213461. The reversal of 231213454 is 454312132.

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

It is a super-2 number, since 2×231213454² = 106919322621220232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090524 + ... + 1090735.

It is an arithmetic number, because the mean of its divisors is an integer number (44170515).

Almost surely, 2^231213454 is an apocalyptic number.

231213454 is a deficient number, since it is larger than the sum of its proper divisors (122150666).

231213454 is a wasteful number, since it uses less digits than its factorization.

231213454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181314.

The product of its digits is 2880, while the sum is 25.

The square root of 231213454 is about 15205.7046531886. The cubic root of 231213454 is about 613.7681770451.

Adding to 231213454 its reverse (454312132), we get a palindrome (685525586).

The spelling of 231213454 in words is "two hundred thirty-one million, two hundred thirteen thousand, four hundred fifty-four".