20130331234 has 24 divisors (see below), whose sum is σ = 33457316112. Its totient is φ = 9074847600.

The previous prime is 20130331219. The next prime is 20130331241. The reversal of 20130331234 is 43213303102.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677992 + ... + 707059.

It is an arithmetic number, because the mean of its divisors is an integer number (1394054838).

Almost surely, 2^20130331234 is an apocalyptic number.

20130331234 is a deficient number, since it is larger than the sum of its proper divisors (13326984878).

20130331234 is a wasteful number, since it uses less digits than its factorization.

20130331234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385122 (or 1385109 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20130331234 its reverse (43213303102), we get a palindrome (63343634336).

The spelling of 20130331234 in words is "twenty billion, one hundred thirty million, three hundred thirty-one thousand, two hundred thirty-four".