381234451 has 4 divisors (see below), whose sum is σ = 410560192. Its totient is φ = 351908712.

The previous prime is 381234439. The next prime is 381234457. The reversal of 381234451 is 154432183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154432183 = 223 ⋅692521.

It is a cyclic number.

It is not a de Polignac number, because 381234451 - 2⁵ = 381234419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381234457) 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, 14662851 + ... + 14662876.

It is an arithmetic number, because the mean of its divisors is an integer number (102640048).

Almost surely, 2^381234451 is an apocalyptic number.

381234451 is a deficient number, since it is larger than the sum of its proper divisors (29325741).

381234451 is a wasteful number, since it uses less digits than its factorization.

381234451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29325740.

The product of its digits is 11520, while the sum is 31.

The square root of 381234451 is about 19525.2260166176. The cubic root of 381234451 is about 725.0991230306.

The spelling of 381234451 in words is "three hundred eighty-one million, two hundred thirty-four thousand, four hundred fifty-one".