1610061231 has 4 divisors (see below), whose sum is σ = 2146748312. Its totient is φ = 1073374152.

The previous prime is 1610061227. The next prime is 1610061239. The reversal of 1610061231 is 1321600161.

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

It is not a de Polignac number, because 1610061231 - 2² = 1610061227 is a prime.

It is a super-2 number, since 2×1610061231² = 5184594335138470722, 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 = 1610061198 and 1610061207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1610061239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268343536 + ... + 268343541.

It is an arithmetic number, because the mean of its divisors is an integer number (536687078).

Almost surely, 2^1610061231 is an apocalyptic number.

1610061231 is a deficient number, since it is larger than the sum of its proper divisors (536687081).

1610061231 is an equidigital number, since it uses as much as digits as its factorization.

1610061231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536687080.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1610061231 is about 40125.5682950410. The cubic root of 1610061231 is about 1172.0535758783.

Adding to 1610061231 its reverse (1321600161), we get a palindrome (2931661392).

The spelling of 1610061231 in words is "one billion, six hundred ten million, sixty-one thousand, two hundred thirty-one".