378613331 has 2 divisors, whose sum is σ = 378613332. Its totient is φ = 378613330.

The previous prime is 378613309. The next prime is 378613349. The reversal of 378613331 is 133316873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378613331 - 2²⁶ = 311504467 is a prime.

It is a super-2 number, since 2×378613331² = 286696108821831122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 378613291 and 378613300.

It is not a weakly prime, because it can be changed into another prime (378613351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189306665 + 189306666.

It is an arithmetic number, because the mean of its divisors is an integer number (189306666).

Almost surely, 2^378613331 is an apocalyptic number.

378613331 is a deficient number, since it is larger than the sum of its proper divisors (1).

378613331 is an equidigital number, since it uses as much as digits as its factorization.

378613331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 378613331 is about 19457.9888734679. The cubic root of 378613331 is about 723.4335300947.

The spelling of 378613331 in words is "three hundred seventy-eight million, six hundred thirteen thousand, three hundred thirty-one".