31211444134 has 96 divisors (see below), whose sum is σ = 57664807200. Its totient is φ = 12542874624.

The previous prime is 31211444129. The next prime is 31211444137. The reversal of 31211444134 is 43144411213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31211444137) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6858892 + ... + 6863440.

It is an arithmetic number, because the mean of its divisors is an integer number (600675075).

Almost surely, 2^31211444134 is an apocalyptic number.

31211444134 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

31211444134 is a deficient number, since it is larger than the sum of its proper divisors (26453363066).

31211444134 is a wasteful number, since it uses less digits than its factorization.

31211444134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4662 (or 4643 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 31211444134 its reverse (43144411213), we get a palindrome (74355855347).

The spelling of 31211444134 in words is "thirty-one billion, two hundred eleven million, four hundred forty-four thousand, one hundred thirty-four".