102031112442 has 32 divisors (see below), whose sum is σ = 234385920000. Its totient is φ = 29005252848.

The previous prime is 102031112423. The next prime is 102031112461. The reversal of 102031112442 is 244211130201.

It is an interprime number because it is at equal distance from previous prime (102031112423) and next prime (102031112461).

It is a super-3 number, since 3×102031112442³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 6095442 + ... + 6112157.

It is an arithmetic number, because the mean of its divisors is an integer number (7324560000).

Almost surely, 2^102031112442 is an apocalyptic number.

102031112442 is an abundant number, since it is smaller than the sum of its proper divisors (132354807558).

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

102031112442 is a wasteful number, since it uses less digits than its factorization.

102031112442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12207810.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 102031112442 its reverse (244211130201), we get a palindrome (346242242643).

The spelling of 102031112442 in words is "one hundred two billion, thirty-one million, one hundred twelve thousand, four hundred forty-two".