1220131395 has 48 divisors (see below), whose sum is σ = 2559211200. Its totient is φ = 524961792.

The previous prime is 1220131369. The next prime is 1220131397. The reversal of 1220131395 is 5931310221.

It is not a de Polignac number, because 1220131395 - 2⁷ = 1220131267 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220131397) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108570 + ... + 119279.

It is an arithmetic number, because the mean of its divisors is an integer number (53316900).

Almost surely, 2^1220131395 is an apocalyptic number.

1220131395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220131395 is an abundant number, since it is smaller than the sum of its proper divisors (1339079805).

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

1220131395 is a wasteful number, since it uses less digits than its factorization.

1220131395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227884 (or 227881 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 1220131395 is about 34930.3792564581. The cubic root of 1220131395 is about 1068.5680892811.

The spelling of 1220131395 in words is "one billion, two hundred twenty million, one hundred thirty-one thousand, three hundred ninety-five".