137220371 has 8 divisors (see below), whose sum is σ = 140990640. Its totient is φ = 133498368.

The previous prime is 137220329. The next prime is 137220403. The reversal of 137220371 is 173022731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137220371 - 2¹⁴ = 137203987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137220371.

It is not an unprimeable number, because it can be changed into a prime (137220301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6266 + ... + 17711.

It is an arithmetic number, because the mean of its divisors is an integer number (17623830).

Almost surely, 2^137220371 is an apocalyptic number.

137220371 is a deficient number, since it is larger than the sum of its proper divisors (3770269).

137220371 is an equidigital number, since it uses as much as digits as its factorization.

137220371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24133.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 137220371 is about 11714.1099107017. The cubic root of 137220371 is about 515.7899348749.

The spelling of 137220371 in words is "one hundred thirty-seven million, two hundred twenty thousand, three hundred seventy-one".