31400440202442 has 32 divisors (see below), whose sum is σ = 62842743984384. Its totient is φ = 10459837252800.

The previous prime is 31400440202441. The next prime is 31400440202459. The reversal of 31400440202442 is 24420204400413.

It is not an unprimeable number, because it can be changed into a prime (31400440202441) 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, 118021828 + ... + 118287584.

It is an arithmetic number, because the mean of its divisors is an integer number (1963835749512).

Almost surely, 2^{31400440202442} is an apocalyptic number.

31400440202442 is an abundant number, since it is smaller than the sum of its proper divisors (31442303781942).

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

31400440202442 is a wasteful number, since it uses less digits than its factorization.

31400440202442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278814.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 31400440202442 its reverse (24420204400413), we get a palindrome (55820644602855).

The spelling of 31400440202442 in words is "thirty-one trillion, four hundred billion, four hundred forty million, two hundred two thousand, four hundred forty-two".