31145153 has 8 divisors (see below), whose sum is σ = 33683496. Its totient is φ = 28627200.

The previous prime is 31145143. The next prime is 31145167. The reversal of 31145153 is 35154113.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 31047184 = 313^2 + 5572^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31145153 - 2⁴ = 31145137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31145113) 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, 1838 + ... + 8103.

It is an arithmetic number, because the mean of its divisors is an integer number (4210437).

Almost surely, 2^31145153 is an apocalyptic number.

It is an amenable number.

31145153 is a deficient number, since it is larger than the sum of its proper divisors (2538343).

31145153 is a wasteful number, since it uses less digits than its factorization.

31145153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10195.

The product of its digits is 900, while the sum is 23.

The square root of 31145153 is about 5580.7842638826. The cubic root of 31145153 is about 314.6276039310.

Adding to 31145153 its reverse (35154113), we get a palindrome (66299266).

The spelling of 31145153 in words is "thirty-one million, one hundred forty-five thousand, one hundred fifty-three".