31442354 has 4 divisors (see below), whose sum is σ = 47163534. Its totient is φ = 15721176.

The previous prime is 31442353. The next prime is 31442377. The reversal of 31442354 is 45324413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45324413 = 113 ⋅401101.

It can be written as a sum of positive squares in only one way, i.e., 20912329 + 10530025 = 4573^2 + 3245^2 .

It is a super-2 number, since 2×31442354² = 1977243250122632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31442353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7860587 + ... + 7860590.

Almost surely, 2^31442354 is an apocalyptic number.

31442354 is a deficient number, since it is larger than the sum of its proper divisors (15721180).

31442354 is a wasteful number, since it uses less digits than its factorization.

31442354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15721179.

The product of its digits is 5760, while the sum is 26.

The square root of 31442354 is about 5607.3482146198. The cubic root of 31442354 is about 315.6252099335.

Adding to 31442354 its reverse (45324413), we get a palindrome (76766767).

The spelling of 31442354 in words is "thirty-one million, four hundred forty-two thousand, three hundred fifty-four".