31212043130 has 32 divisors (see below), whose sum is σ = 57584891520. Its totient is φ = 12176683200.

The previous prime is 31212043091. The next prime is 31212043139. The reversal of 31212043130 is 3134021213.

It is not an unprimeable number, because it can be changed into a prime (31212043139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162950 + ... + 298289.

It is an arithmetic number, because the mean of its divisors is an integer number (1799527860).

Almost surely, 2^31212043130 is an apocalyptic number.

31212043130 is a deficient number, since it is larger than the sum of its proper divisors (26372848390).

31212043130 is a wasteful number, since it uses less digits than its factorization.

31212043130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461414.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31212043130 its reverse (3134021213), we get a palindrome (34346064343).

The spelling of 31212043130 in words is "thirty-one billion, two hundred twelve million, forty-three thousand, one hundred thirty".