1210403161 has 16 divisors (see below), whose sum is σ = 1350236160. Its totient is φ = 1075810320.

The previous prime is 1210403149. The next prime is 1210403177. The reversal of 1210403161 is 1613040121.

It is a cyclic number.

It is not a de Polignac number, because 1210403161 - 2⁹ = 1210402649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210403261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82746 + ... + 96268.

It is an arithmetic number, because the mean of its divisors is an integer number (84389760).

Almost surely, 2^1210403161 is an apocalyptic number.

1210403161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210403161 is a deficient number, since it is larger than the sum of its proper divisors (139832999).

1210403161 is a wasteful number, since it uses less digits than its factorization.

1210403161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13716.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1210403161 is about 34790.8488111457. The cubic root of 1210403161 is about 1065.7205732840.

Adding to 1210403161 its reverse (1613040121), we get a palindrome (2823443282).

The spelling of 1210403161 in words is "one billion, two hundred ten million, four hundred three thousand, one hundred sixty-one".