1402311220 has 24 divisors (see below), whose sum is σ = 2945728800. Its totient is φ = 560757792.

The previous prime is 1402311217. The next prime is 1402311247. The reversal of 1402311220 is 221132041.

It is a junction number, because it is equal to n+sod(n) for n = 1402311194 and 1402311203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76071 + ... + 92689.

It is an arithmetic number, because the mean of its divisors is an integer number (122738700).

Almost surely, 2^1402311220 is an apocalyptic number.

1402311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402311220 is an abundant number, since it is smaller than the sum of its proper divisors (1543417580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1402311220 is a wasteful number, since it uses less digits than its factorization.

1402311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20847 (or 20845 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1402311220 is about 37447.4461078456. The cubic root of 1402311220 is about 1119.3042075014.

Adding to 1402311220 its reverse (221132041), we get a palindrome (1623443261).

The spelling of 1402311220 in words is "one billion, four hundred two million, three hundred eleven thousand, two hundred twenty".