1405113213 has 32 divisors (see below), whose sum is σ = 2287498240. Its totient is φ = 749295360.

The previous prime is 1405113211. The next prime is 1405113233. The reversal of 1405113213 is 3123115041.

It is not a de Polignac number, because 1405113213 - 2¹ = 1405113211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1405113213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405113211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453 + ... + 53013.

It is an arithmetic number, because the mean of its divisors is an integer number (71484320).

Almost surely, 2^1405113213 is an apocalyptic number.

It is an amenable number.

1405113213 is a deficient number, since it is larger than the sum of its proper divisors (882385027).

1405113213 is a wasteful number, since it uses less digits than its factorization.

1405113213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52657.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1405113213 is about 37484.8397755679. The cubic root of 1405113213 is about 1120.0492147273.

Adding to 1405113213 its reverse (3123115041), we get a palindrome (4528228254).

It can be divided in two parts, 1405113 and 213, that added together give a triangular number (1405326 = T₁₆₇₆).

The spelling of 1405113213 in words is "one billion, four hundred five million, one hundred thirteen thousand, two hundred thirteen".