378377431 has 4 divisors (see below), whose sum is σ = 378473200. Its totient is φ = 378281664.

The previous prime is 378377407. The next prime is 378377453. The reversal of 378377431 is 134773873.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134773873 = 13 ⋅10367221.

It is a cyclic number.

It is not a de Polignac number, because 378377431 - 2⁵ = 378377399 is a prime.

It is a super-2 number, since 2×378377431² = 286338960580319522, which 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 (378377491) 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, 41691 + ... + 49948.

It is an arithmetic number, because the mean of its divisors is an integer number (94618300).

Almost surely, 2^378377431 is an apocalyptic number.

378377431 is a deficient number, since it is larger than the sum of its proper divisors (95769).

378377431 is an equidigital number, since it uses as much as digits as its factorization.

378377431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95768.

The product of its digits is 296352, while the sum is 43.

The square root of 378377431 is about 19451.9261514124. The cubic root of 378377431 is about 723.2832506304.

The spelling of 378377431 in words is "three hundred seventy-eight million, three hundred seventy-seven thousand, four hundred thirty-one".