31211143134 has 32 divisors (see below), whose sum is σ = 64956608640. Its totient is φ = 9989529312.

The previous prime is 31211143099. The next prime is 31211143147. The reversal of 31211143134 is 43134111213.

It is a happy number.

It is a super-4 number, since 4×31211143134⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1009977 + ... + 1040420.

It is an arithmetic number, because the mean of its divisors is an integer number (2029894020).

Almost surely, 2^31211143134 is an apocalyptic number.

31211143134 is an abundant number, since it is smaller than the sum of its proper divisors (33745465506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31211143134 is a wasteful number, since it uses less digits than its factorization.

31211143134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050504.

The product of its digits is 864, while the sum is 24.

Adding to 31211143134 its reverse (43134111213), we get a palindrome (74345254347).

It can be divided in two parts, 31211 and 143134, that added together give a triangular number (174345 = T₅₉₀).

The spelling of 31211143134 in words is "thirty-one billion, two hundred eleven million, one hundred forty-three thousand, one hundred thirty-four".