1210413881 has 4 divisors (see below), whose sum is σ = 1214281332. Its totient is φ = 1206546432.

The previous prime is 1210413863. The next prime is 1210413917. The reversal of 1210413881 is 1883140121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1883140121 = 479 ⋅3931399.

It can be written as a sum of positive squares in 2 ways, for example, as 35295481 + 1175118400 = 5941^2 + 34280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210413881 - 2¹⁸ = 1210151737 is a prime.

It is a super-2 number, since 2×1210413881² = 2930203526634964322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210413811) 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, 1933256 + ... + 1933881.

It is an arithmetic number, because the mean of its divisors is an integer number (303570333).

Almost surely, 2^1210413881 is an apocalyptic number.

It is an amenable number.

1210413881 is a deficient number, since it is larger than the sum of its proper divisors (3867451).

1210413881 is an equidigital number, since it uses as much as digits as its factorization.

1210413881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867450.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 1210413881 is about 34791.0028743065. The cubic root of 1210413881 is about 1065.7237194784.

The spelling of 1210413881 in words is "one billion, two hundred ten million, four hundred thirteen thousand, eight hundred eighty-one".