97631261 has 24 divisors (see below), whose sum is σ = 122492160. Its totient is φ = 75775392.

The previous prime is 97631249. The next prime is 97631279. The reversal of 97631261 is 16213679.

It is not a de Polignac number, because 97631261 - 2¹⁸ = 97369117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97631201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408380 + ... + 408618.

It is an arithmetic number, because the mean of its divisors is an integer number (5103840).

Almost surely, 2^97631261 is an apocalyptic number.

97631261 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

97631261 is a deficient number, since it is larger than the sum of its proper divisors (24860899).

97631261 is a wasteful number, since it uses less digits than its factorization.

97631261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 326 counting only the distinct ones).

The product of its digits is 13608, while the sum is 35.

The square root of 97631261 is about 9880.8532526296. The cubic root of 97631261 is about 460.4646549336.

The spelling of 97631261 in words is "ninety-seven million, six hundred thirty-one thousand, two hundred sixty-one".