1377421131 has 24 divisors (see below), whose sum is σ = 1950896784. Its totient is φ = 864302400.

The previous prime is 1377421099. The next prime is 1377421181. The reversal of 1377421131 is 1311247731.

It is not a de Polignac number, because 1377421131 - 2⁵ = 1377421099 is a prime.

It is a super-2 number, since 2×1377421131² = 3794577944250638322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1377421181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165981 + ... + 174081.

It is an arithmetic number, because the mean of its divisors is an integer number (81287366).

Almost surely, 2^1377421131 is an apocalyptic number.

1377421131 is a deficient number, since it is larger than the sum of its proper divisors (573475653).

1377421131 is a wasteful number, since it uses less digits than its factorization.

1377421131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8299 (or 8280 counting only the distinct ones).

The product of its digits is 3528, while the sum is 30.

The square root of 1377421131 is about 37113.6246006773. The cubic root of 1377421131 is about 1112.6423349596.

Adding to 1377421131 its reverse (1311247731), we get a palindrome (2688668862).

The spelling of 1377421131 in words is "one billion, three hundred seventy-seven million, four hundred twenty-one thousand, one hundred thirty-one".