161046131 has 4 divisors (see below), whose sum is σ = 162471432. Its totient is φ = 159620832.

The previous prime is 161046113. The next prime is 161046133. The reversal of 161046131 is 131640161.

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

It is a cyclic number.

It is not a de Polignac number, because 161046131 - 2¹⁰ = 161045107 is a prime.

It is a super-2 number, since 2×161046131² = 51871712620138322, 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 = 161046097 and 161046106.

It is not an unprimeable number, because it can be changed into a prime (161046133) 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, 712481 + ... + 712706.

It is an arithmetic number, because the mean of its divisors is an integer number (40617858).

Almost surely, 2^161046131 is an apocalyptic number.

161046131 is a deficient number, since it is larger than the sum of its proper divisors (1425301).

161046131 is a wasteful number, since it uses less digits than its factorization.

161046131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425300.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 161046131 is about 12690.3952263119. The cubic root of 161046131 is about 544.0641358116.

Adding to 161046131 its reverse (131640161), we get a palindrome (292686292).

The spelling of 161046131 in words is "one hundred sixty-one million, forty-six thousand, one hundred thirty-one".