137276381 has 4 divisors (see below), whose sum is σ = 149756064. Its totient is φ = 124796700.

The previous prime is 137276357. The next prime is 137276393. The reversal of 137276381 is 183672731.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137276381 is a prime.

It is a super-2 number, since 2×137276381² = 37689609560914322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137270381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6239825 + ... + 6239846.

It is an arithmetic number, because the mean of its divisors is an integer number (37439016).

Almost surely, 2^137276381 is an apocalyptic number.

137276381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

137276381 is a deficient number, since it is larger than the sum of its proper divisors (12479683).

137276381 is a wasteful number, since it uses less digits than its factorization.

137276381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12479682.

The product of its digits is 42336, while the sum is 38.

The square root of 137276381 is about 11716.5003734050. The cubic root of 137276381 is about 515.8601029417.

The spelling of 137276381 in words is "one hundred thirty-seven million, two hundred seventy-six thousand, three hundred eighty-one".