1351212520 has 32 divisors (see below), whose sum is σ = 3474547200. Its totient is φ = 463272768.

The previous prime is 1351212497. The next prime is 1351212539. The reversal of 1351212520 is 252121531.

It is a junction number, because it is equal to n+sod(n) for n = 1351212491 and 1351212500.

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, 2412600 + ... + 2413159.

It is an arithmetic number, because the mean of its divisors is an integer number (108579600).

Almost surely, 2^1351212520 is an apocalyptic number.

1351212520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351212520 is an abundant number, since it is smaller than the sum of its proper divisors (2123334680).

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

1351212520 is a wasteful number, since it uses less digits than its factorization.

1351212520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4825777 (or 4825773 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1351212520 is about 36758.8427456578. The cubic root of 1351212520 is about 1105.5402366430.

It can be divided in two parts, 135121 and 2520, that added together give a square (137641 = 371²).

The spelling of 1351212520 in words is "one billion, three hundred fifty-one million, two hundred twelve thousand, five hundred twenty".