31540214442 has 16 divisors (see below), whose sum is σ = 68815013472. Its totient is φ = 9557640720.

The previous prime is 31540214441. The next prime is 31540214507. The reversal of 31540214442 is 24441204513.

It is not an unprimeable number, because it can be changed into a prime (31540214441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238940953 + ... + 238941084.

It is an arithmetic number, because the mean of its divisors is an integer number (4300938342).

Almost surely, 2^31540214442 is an apocalyptic number.

31540214442 is an abundant number, since it is smaller than the sum of its proper divisors (37274799030).

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

31540214442 is a wasteful number, since it uses less digits than its factorization.

31540214442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477882053.

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 31540214442 its reverse (24441204513), we get a palindrome (55981418955).

The spelling of 31540214442 in words is "thirty-one billion, five hundred forty million, two hundred fourteen thousand, four hundred forty-two".