31332020142 has 32 divisors (see below), whose sum is σ = 62865677952. Its totient is φ = 10410431904.

The previous prime is 31332020141. The next prime is 31332020191. The reversal of 31332020142 is 24102023313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332020141) 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, 7936213 + ... + 7940159.

It is an arithmetic number, because the mean of its divisors is an integer number (1964552436).

Almost surely, 2^31332020142 is an apocalyptic number.

31332020142 is an abundant number, since it is smaller than the sum of its proper divisors (31533657810).

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

31332020142 is a wasteful number, since it uses less digits than its factorization.

31332020142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31332020142 its reverse (24102023313), we get a palindrome (55434043455).

The spelling of 31332020142 in words is "thirty-one billion, three hundred thirty-two million, twenty thousand, one hundred forty-two".