20131311134 has 16 divisors (see below), whose sum is σ = 33482182896. Its totient is φ = 9000585600.

The previous prime is 20131311133. The next prime is 20131311197. The reversal of 20131311134 is 43111313102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131311133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7499147 + ... + 7501830.

It is an arithmetic number, because the mean of its divisors is an integer number (2092636431).

Almost surely, 2^20131311134 is an apocalyptic number.

20131311134 is a deficient number, since it is larger than the sum of its proper divisors (13350871762).

20131311134 is a wasteful number, since it uses less digits than its factorization.

20131311134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15001051.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20131311134 its reverse (43111313102), we get a palindrome (63242624236).

The spelling of 20131311134 in words is "twenty billion, one hundred thirty-one million, three hundred eleven thousand, one hundred thirty-four".