10161031261 has 12 divisors (see below), whose sum is σ = 10884054432. Its totient is φ = 9482542344.

The previous prime is 10161031247. The next prime is 10161031277. The reversal of 10161031261 is 16213016101.

It is not a de Polignac number, because 10161031261 - 2⁹ = 10161030749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10161031211) 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, 185865 + ... + 234238.

It is an arithmetic number, because the mean of its divisors is an integer number (907004536).

Almost surely, 2^10161031261 is an apocalyptic number.

It is an amenable number.

10161031261 is a deficient number, since it is larger than the sum of its proper divisors (723023171).

10161031261 is an equidigital number, since it uses as much as digits as its factorization.

10161031261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420208 (or 420189 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 10161031261 its reverse (16213016101), we get a palindrome (26374047362).

The spelling of 10161031261 in words is "ten billion, one hundred sixty-one million, thirty-one thousand, two hundred sixty-one".