137011321 has 4 divisors (see below), whose sum is σ = 138341632. Its totient is φ = 135681012.

The previous prime is 137011267. The next prime is 137011349. The reversal of 137011321 is 123110731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123110731 = 251 ⋅490481.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137011321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665001 + ... + 665206.

It is an arithmetic number, because the mean of its divisors is an integer number (34585408).

Almost surely, 2^137011321 is an apocalyptic number.

It is an amenable number.

137011321 is a deficient number, since it is larger than the sum of its proper divisors (1330311).

137011321 is a wasteful number, since it uses less digits than its factorization.

137011321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330310.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 137011321 is about 11705.1835098814. The cubic root of 137011321 is about 515.5278729869.

The spelling of 137011321 in words is "one hundred thirty-seven million, eleven thousand, three hundred twenty-one".