51131234 has 48 divisors (see below), whose sum is σ = 99852480. Its totient is φ = 19054560.

The previous prime is 51131219. The next prime is 51131243. The reversal of 51131234 is 43213115.

It is a super-2 number, since 2×51131234² = 5228806180725512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 477809 + ... + 477915.

It is an arithmetic number, because the mean of its divisors is an integer number (2080260).

Almost surely, 2^51131234 is an apocalyptic number.

51131234 is a deficient number, since it is larger than the sum of its proper divisors (48721246).

51131234 is a wasteful number, since it uses less digits than its factorization.

51131234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 156 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 51131234 is about 7150.6107431464. The cubic root of 51131234 is about 371.1607908029.

Adding to 51131234 its reverse (43213115), we get a palindrome (94344349).

The spelling of 51131234 in words is "fifty-one million, one hundred thirty-one thousand, two hundred thirty-four".