7831961 has 4 divisors (see below), whose sum is σ = 7844112. Its totient is φ = 7819812.

The previous prime is 7831949. The next prime is 7831997. The reversal of 7831961 is 1691387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7831961 - 2⁶ = 7831897 is a prime.

It is a super-2 number, since 2×7831961² = 122679226211042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7831921) 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, 5051 + ... + 6416.

It is an arithmetic number, because the mean of its divisors is an integer number (1961028).

Almost surely, 2^7831961 is an apocalyptic number.

It is an amenable number.

7831961 is a deficient number, since it is larger than the sum of its proper divisors (12151).

7831961 is a wasteful number, since it uses less digits than its factorization.

7831961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150.

The product of its digits is 9072, while the sum is 35.

The square root of 7831961 is about 2798.5640961036. The cubic root of 7831961 is about 198.5897544093.

It can be divided in two parts, 783 and 1961, that added together give a cube (2744 = 14³).

The spelling of 7831961 in words is "seven million, eight hundred thirty-one thousand, nine hundred sixty-one".