771132381 has 8 divisors (see below), whose sum is σ = 1037609760. Its totient is φ = 509371632.

The previous prime is 771132371. The next prime is 771132473. The reversal of 771132381 is 183231177.

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

It is not a de Polignac number, because 771132381 - 2⁷ = 771132253 is a prime.

It is a super-2 number, since 2×771132381² = 1189290298053458322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771132331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178775 + ... + 1179428.

It is an arithmetic number, because the mean of its divisors is an integer number (129701220).

Almost surely, 2^771132381 is an apocalyptic number.

It is an amenable number.

771132381 is a deficient number, since it is larger than the sum of its proper divisors (266477379).

771132381 is a wasteful number, since it uses less digits than its factorization.

771132381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358315.

The product of its digits is 7056, while the sum is 33.

The square root of 771132381 is about 27769.2704441438. The cubic root of 771132381 is about 917.0147333766.

The spelling of 771132381 in words is "seven hundred seventy-one million, one hundred thirty-two thousand, three hundred eighty-one".