31053261 has 4 divisors (see below), whose sum is σ = 41404352. Its totient is φ = 20702172.

The previous prime is 31053259. The next prime is 31053311. The reversal of 31053261 is 16235013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 31053261 - 2¹ = 31053259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31053221) 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, 5175541 + ... + 5175546.

It is an arithmetic number, because the mean of its divisors is an integer number (10351088).

Almost surely, 2^31053261 is an apocalyptic number.

It is an amenable number.

31053261 is a deficient number, since it is larger than the sum of its proper divisors (10351091).

31053261 is a wasteful number, since it uses less digits than its factorization.

31053261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351090.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 31053261 is about 5572.5452891834. The cubic root of 31053261 is about 314.3178688373.

Adding to 31053261 its reverse (16235013), we get a palindrome (47288274).

The spelling of 31053261 in words is "thirty-one million, fifty-three thousand, two hundred sixty-one".