137220403 has 2 divisors, whose sum is σ = 137220404. Its totient is φ = 137220402.

The previous prime is 137220329. The next prime is 137220407. The reversal of 137220403 is 304022731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137220403 - 2¹⁷ = 137089331 is a prime.

It is not a weakly prime, because it can be changed into another prime (137220407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68610201 + 68610202.

It is an arithmetic number, because the mean of its divisors is an integer number (68610202).

Almost surely, 2^137220403 is an apocalyptic number.

137220403 is a deficient number, since it is larger than the sum of its proper divisors (1).

137220403 is an equidigital number, since it uses as much as digits as its factorization.

137220403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 137220403 is about 11714.1112765758. Note that the first 3 decimals coincide. The cubic root of 137220403 is about 515.7899749692.

The spelling of 137220403 in words is "one hundred thirty-seven million, two hundred twenty thousand, four hundred three".