31143012234 has 16 divisors (see below), whose sum is σ = 62299409472. Its totient is φ = 10378773248.

The previous prime is 31143012211. The next prime is 31143012319. The reversal of 31143012234 is 43221034113.

It is a happy number.

It is a super-2 number, since 2×31143012234² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527334 + ... + 583409.

It is an arithmetic number, because the mean of its divisors is an integer number (3893713092).

Almost surely, 2^31143012234 is an apocalyptic number.

31143012234 is an abundant number, since it is smaller than the sum of its proper divisors (31156397238).

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

31143012234 is a wasteful number, since it uses less digits than its factorization.

31143012234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115421.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 31143012234 its reverse (43221034113), we get a palindrome (74364046347).

The spelling of 31143012234 in words is "thirty-one billion, one hundred forty-three million, twelve thousand, two hundred thirty-four".