31452023 has 4 divisors (see below), whose sum is σ = 33302160. Its totient is φ = 29601888.

The previous prime is 31452019. The next prime is 31452041. The reversal of 31452023 is 32025413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32025413 = 7 ⋅4575059.

It is a cyclic number.

It is not a de Polignac number, because 31452023 - 2² = 31452019 is a prime.

It is a super-3 number, since 3×31452023³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31451986 and 31452004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31452013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925043 + ... + 925076.

It is an arithmetic number, because the mean of its divisors is an integer number (8325540).

Almost surely, 2^31452023 is an apocalyptic number.

31452023 is a deficient number, since it is larger than the sum of its proper divisors (1850137).

31452023 is a wasteful number, since it uses less digits than its factorization.

31452023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1850136.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 31452023 is about 5608.2103205925. The cubic root of 31452023 is about 315.6575597950.

Adding to 31452023 its reverse (32025413), we get a palindrome (63477436).

The spelling of 31452023 in words is "thirty-one million, four hundred fifty-two thousand, twenty-three".