131220470 has 16 divisors (see below), whose sum is σ = 236340720. Its totient is φ = 52456224.

The previous prime is 131220469. The next prime is 131220499. The reversal of 131220470 is 74022131.

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, 20249 + ... + 25931.

It is an arithmetic number, because the mean of its divisors is an integer number (14771295).

Almost surely, 2^131220470 is an apocalyptic number.

131220470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131220470 is a deficient number, since it is larger than the sum of its proper divisors (105120250).

131220470 is a wasteful number, since it uses less digits than its factorization.

131220470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7999.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 131220470 is about 11455.1503700301. The cubic root of 131220470 is about 508.1600622986.

The spelling of 131220470 in words is "one hundred thirty-one million, two hundred twenty thousand, four hundred seventy".