31453242 has 16 divisors (see below), whose sum is σ = 62995872. Its totient is φ = 10469520.

The previous prime is 31453241. The next prime is 31453249. The reversal of 31453242 is 24235413.

It is not an unprimeable number, because it can be changed into a prime (31453241) 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, 1392 + ... + 8052.

It is an arithmetic number, because the mean of its divisors is an integer number (3937242).

Almost surely, 2^31453242 is an apocalyptic number.

31453242 is an abundant number, since it is smaller than the sum of its proper divisors (31542630).

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

31453242 is a wasteful number, since it uses less digits than its factorization.

31453242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453.

The product of its digits is 2880, while the sum is 24.

The square root of 31453242 is about 5608.3189994864. The cubic root of 31453242 is about 315.6616377689.

Adding to 31453242 its reverse (24235413), we get a palindrome (55688655).

The spelling of 31453242 in words is "thirty-one million, four hundred fifty-three thousand, two hundred forty-two".