261331302 has 16 divisors (see below), whose sum is σ = 539523072. Its totient is φ = 84300360.

The previous prime is 261331297. The next prime is 261331303. The reversal of 261331302 is 203133162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261331303) 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, 702318 + ... + 702689.

It is an arithmetic number, because the mean of its divisors is an integer number (33720192).

Almost surely, 2^261331302 is an apocalyptic number.

261331302 is an abundant number, since it is smaller than the sum of its proper divisors (278191770).

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

261331302 is a wasteful number, since it uses less digits than its factorization.

261331302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405043.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 261331302 is about 16165.7447091064. The cubic root of 261331302 is about 639.3379400303.

Adding to 261331302 its reverse (203133162), we get a palindrome (464464464).

The spelling of 261331302 in words is "two hundred sixty-one million, three hundred thirty-one thousand, three hundred two".