30431202142 has 128 divisors (see below), whose sum is σ = 57198182400. Its totient is φ = 11976854400.

The previous prime is 30431202107. The next prime is 30431202157. The reversal of 30431202142 is 24120213403.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17660893 + ... + 17662615.

It is an arithmetic number, because the mean of its divisors is an integer number (446860800).

Almost surely, 2^30431202142 is an apocalyptic number.

30431202142 is a deficient number, since it is larger than the sum of its proper divisors (26766980258).

30431202142 is a wasteful number, since it uses less digits than its factorization.

30431202142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 30431202142 its reverse (24120213403), we get a palindrome (54551415545).

The spelling of 30431202142 in words is "thirty billion, four hundred thirty-one million, two hundred two thousand, one hundred forty-two".