6161831 has 4 divisors (see below), whose sum is σ = 6635832. Its totient is φ = 5687832.

The previous prime is 6161819. The next prime is 6161873. The reversal of 6161831 is 1381616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6161831 is a prime.

It is a super-2 number, since 2×6161831² = 75936322545122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6161831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161431) 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, 236981 + ... + 237006.

It is an arithmetic number, because the mean of its divisors is an integer number (1658958).

Almost surely, 2^6161831 is an apocalyptic number.

6161831 is a deficient number, since it is larger than the sum of its proper divisors (474001).

6161831 is a wasteful number, since it uses less digits than its factorization.

6161831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474000.

The product of its digits is 864, while the sum is 26.

The square root of 6161831 is about 2482.3035672536. The cubic root of 6161831 is about 183.3312899680.

Subtracting from 6161831 its sum of digits (26), we obtain a triangular number (6161805 = T₃₅₁₀).

The spelling of 6161831 in words is "six million, one hundred sixty-one thousand, eight hundred thirty-one".