1312201420 has 24 divisors (see below), whose sum is σ = 2756379024. Its totient is φ = 524736576.

The previous prime is 1312201361. The next prime is 1312201441. The reversal of 1312201420 is 241022131.

It is a junction number, because it is equal to n+sod(n) for n = 1312201394 and 1312201403.

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, 95079 + ... + 108001.

It is an arithmetic number, because the mean of its divisors is an integer number (114849126).

Almost surely, 2^1312201420 is an apocalyptic number.

1312201420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312201420 is an abundant number, since it is smaller than the sum of its proper divisors (1444177604).

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

1312201420 is a wasteful number, since it uses less digits than its factorization.

1312201420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18009 (or 18007 counting only the distinct ones).

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

The square root of 1312201420 is about 36224.3208355933. The cubic root of 1312201420 is about 1094.7967541151.

Adding to 1312201420 its reverse (241022131), we get a palindrome (1553223551).

The spelling of 1312201420 in words is "one billion, three hundred twelve million, two hundred one thousand, four hundred twenty".