361931 has 8 divisors (see below), whose sum is σ = 390720. Its totient is φ = 334152.

The previous prime is 361927. The next prime is 361943. The reversal of 361931 is 139163.

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

It is a cyclic number.

It is not a de Polignac number, because 361931 - 2² = 361927 is a prime.

It is a super-2 number, since 2×361931² = 261988097522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 361897 and 361906.

It is not an unprimeable number, because it can be changed into a prime (361901) 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, 596 + ... + 1038.

It is an arithmetic number, because the mean of its divisors is an integer number (48840).

2³⁶¹⁹³¹ is an apocalyptic number.

361931 is a deficient number, since it is larger than the sum of its proper divisors (28789).

361931 is a wasteful number, since it uses less digits than its factorization.

361931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its digits is 486, while the sum is 23.

The square root of 361931 is about 601.6070145868. The cubic root of 361931 is about 71.2648312205.

The spelling of 361931 in words is "three hundred sixty-one thousand, nine hundred thirty-one".