961331 has 12 divisors (see below), whose sum is σ = 1168272. Its totient is φ = 787248.

The previous prime is 961319. The next prime is 961339. The reversal of 961331 is 133169.

It is not a de Polignac number, because 961331 - 2¹⁸ = 699187 is a prime.

It is a super-2 number, since 2×961331² = 1848314583122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 961297 and 961306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 701 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (97356).

2⁹⁶¹³³¹ is an apocalyptic number.

961331 is a deficient number, since it is larger than the sum of its proper divisors (206941).

961331 is a wasteful number, since it uses less digits than its factorization.

961331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890 (or 883 counting only the distinct ones).

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

The square root of 961331 is about 980.4748849410. The cubic root of 961331 is about 98.6940525900.

The spelling of 961331 in words is "nine hundred sixty-one thousand, three hundred thirty-one".